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The dynamics of organic pollutant pollution of phosphate, sulphate, nitrite, and nitrate parameters in Cengklik Reservoir water

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AIP Conference Proceedings 2020年第1期2296卷

作者： Anik Krisnawati Mohammad Masykuri Sunarto 1Master of Environmental Science Study Program Postgraduate Universitas Sebelas Maret Jl. Ir. Sutami 36A Surakarta Indonesia 2Chemistry Education Study Program Faculty of Teacher Training and Education Universitas Sebelas Maret Jl. Ir. Sutami 36A Surakarta Indonesia 3Biology Education Study Program Faculty of Teacher Training and Education Universitas Sebelas Maret Jl. Ir. Sutami 36A Surakarta Indonesia

Cengklik Reservoir in Boyolali is a source of agricultural and fishery activities experiencing a tendency for environmental degradation. The use of synthetic chemical fertilizers and animal feed residues tends to increase organic pollution. This research aims to (1) map the level of pollution of organic parameters in Cengklik Reservoir water and (2) determine alternative solutions to reduce the impact of organic pollution. This research is quantitative. Water samples were taken with the grab in situ method at 8 stations namely Senting River inlet, Njati River inlet, Pepe River inlet, water hyacinth station, floating net cage station, water hyacinth-free station - floating net cage and reservoir outlet. The parameters analyzed included phosphate, sulphate, nitrite and nitrate. The analysis was performed using a comparative descriptive method by comparing between stations and quality standards based on Government Regulation Number 82 of 2001 concerning Water Quality Management and Water Pollution Control. From this research, we can sum up that (1) the phosphate compound exceeds the quality standard at the Senting river inlet (2.759 mg/L), the Njati river inlet (0.309 mg/L) and the Pepe river inlet (0.254 mg/L), while sulfate and nitrate compounds meet the quality standards at all stations, but the nitrite exceeds the quality standard at all inlet stations (average inlet of 0.4403 mg/L) and reservoir water bodies (average reservoir water body of 0.7727 mg/L), and (2) control of organic pollution can be done through reducing waste from its source by substituting synthetic chemical fertilizers with organic fertilizers, building WWTP of MSMEs, regulating the Domestic Wastewater Management System (DWMS), and avoiding excessive fish feeding.

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Effectiveness of assertive communication training in efforts to increase on work motivation affiliation nurse practitioner at regional general hospitals in Southeast Sulawesi

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AIP Conference Proceedings 2019年第1期2092卷

作者： Venny Ardita Enie Novieastari Dewi Gayatri 1Master Program of Nursing Science Leadership and Nursing Management Faculty of Nursing Universitas Indonesia Depok 16424 West Java Indonesia 2Department of Basic Science and Fundamental Nursing Faculty of Nursing Universitas Indonesia Depok 16424 West Java Indonesia

Assertive communication becomes a matter of concern in order that nurse practitioner can cooperate with others in various conditions. The nurse less motivated and showed bad attitude in collaborating with colleagues without good communication. The purpose of writing to identify the influence of assertive communication training to work motivation affiliation nurse practitioner at two regional general hospital in Southeast Sulawesi, Indonesia. This research using design a quasi experiment pre test - post test with control group, with sampling in proportional sample with the total sample 74 nurse practitioners, 37 people intervention group and 37 people the control group. The early stages for the intervention group will be pre-test and then given an assertive communication training in 6 sessions, after that do post test 1, the next 2 weeks after the training is done again post test measurement 2. The result showed change of work motivation affiliation pre-post test group significantly higher intervention either on post test 1 and post test 2 (p < α). The study recommended that nursing managers need to improve the work motivation affiliation of nurse through training so that the hospitals to provide satisfaction for patients in receiving nursing services.

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Synthesis of silver nanoparticles using laser ablation method utilizing Nd:YAG laser

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AIP Conference Proceedings 2019年第1期2202卷

作者： Mohammad Zamakhsari Alhamid Beny S. Hadi Ali Khumaeni 1Master Program of Physics Department of Physics Faculty of Science and Mathematics Diponegoro University Tembalang Semarang 50275 Indonesia 2Department of Physics Faculty of Science and Mathematics Diponegoro University Jl. Prof. Soedharto SH Tembalang Semarang 50275 Indonesia

Silver nanoparticles (AgNPs) have attracted many researchers and scientist within the past decade due to their unique characteristics in physical, chemical, and biological properties compared to their macro scale. The AgNPs have been important subject of interest in applied science and material field and widely applied for various applications in the field of physics, chemistry, biology, environment, and medicine. The techniques usually used to synthesize silver nanoparticles are chemical, biological, and physical methods. However, chemical and biological methods still suffer from tedious sample pretreatment, contamination from additional agents during synthesis process, and quiet hazard and expensive. In this study, silver nanoparticles was synthesized using pulse laser ablation method. Experimentally, a high-purity silver plate (99, 95 %) was immersed in 25 ml pure aquades placed in a petri dish with a diameter 50 mm. A pulsed (Nd : YAG) laser (New Polaris II 1064 nm, max energy of 50 mJ, 7 ns) was focused on the gold sample target by a convex lens with a focal length of 30 mm. The laser repetition rate was 10 Hz, and the duration of laser bombardment was 13 hours. The results show that colloidal silver nanoparticles has yellowish colour. Furthermore, the produce silver nanoparticles have spherical shape with an averaged diameter size of tens nm. Detail results and discussion will be presented during presentation.

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Optimization of hybrid PVA/hFDM scaffold preparation

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AIP Conference Proceedings 2021年第1期2344卷

作者： Rizqa Inayati Muhammad Suhaeri Nuzli Fahdia Melinda Remelia Radiana Dhewayani Antarianto 1Master Program in Biomedical Science Faculty of Medicine Universitas Indonesia Jl. Salemba Raya No. 6 Central Jakarta DKI Jakarta 10430 Indonesia 2Rumah Sakit Universitas Indonesia Kampus Universitas Indonesia Depok West Java 16424 Indonesia 3Stem cell and Tissue Engineering Research Cluster Indonesian Medical Education and Research Institute (IMERI) Universitas Indonesia Salemba Raya Jakarta West Java 10430 Indonesia 4Doctoral Program in Biomedical Science Faculty of Medicine Universitas Indonesia Jl. Salemba Raya No. 6 Central Jakarta DKI Jakarta 10430 Indonesia 5Department of Basic Biomedicine Faculty of Medicine Universitas Kristen Indonesia Jl Mayjen Sutoyo No 2 DKI Jakarta 13630 Indonesia 6Department of Histology Faculty of Medicine Universitas Indonesia Jl. Salemba Raya No. 6 Central Jakarta DKI Jakarta 10430 Indonesia

Osteogenic differentiation from Mesenchymal Stem Cell (MSC) to osteoblast has a clinical significance which is very important for treating bone injuries, in the form of femoral fractures with the most cases in Indonesia. Various studies have been conducted to find the best scaffold that can improve osteogenic differentiation, one of which is the development of a hybrid scaffold made from natural biomaterials in the form of the extracellular matrix, and from synthetic biomaterials. The discovery of the best scaffold is not only focused on the source of the scaffold but also requires optimization of the method in making the scaffold. Therefore, the aim of this study is to find out the optimum method for making hybrid scaffolds that support osteogenic differentiation from MSC. Materials and methods: human Fibroblast-derived Matrix (hFDM) as a hybrid scaffold material collected from decellularized fibroblasts cultures from post-cleft-surgery reconstruction palatal skin. Fibroblast cell cultures were divided into two groups of cultures, cultures without Platelet Rich Plasma (PRP), and cultures with the addition of PRP. For decellularization, we performed optimization at the preparation stage of the decellularization solution, and the time of culture for decellularization. In the preparation of the decellularization solution, we divided it into two groups, NH4OH as material from the decellularization solution was diluted with PBS before mixing with 0.25% Triton X-100, and NH4OH was diluted directly in 0.25% Triton X-100. In optimizing the culture time for decellularization, we divided it into three groups, decellularization on the day when cell growth reached 100% confluent, decellularization on the 3rd day after 100% confluent (H + 3) cells, and decellularization on the 4th day after 100% confluent (H + 4) cells. Next, the hFDM matrix is collected and added Polyvinyl Alcohol (PVA) solutions to form a hybrid PVA / hFDM scaffold in the form of a hydrogel. Observations on h

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Low dose nicotine lower MDA level and does not affect wall to lumen ratio in surgically menopausal rats

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AIP Conference Proceedings 2020年第1期2231卷

作者： Shelby Amrus Ernanda Panji Sananta Andrew Jonatan Ayu Novita Kartikaningtyas Yanti Marito Parhusip Ni Putu Frida Baskarani Nadya Rasty Andhira Elli Maulidya Yesi Amelia Muhammad Vico Nur Hudayana Muthi’ah Adira Juwono Iis Novianti Rosyida Ramendra Dirgantara Putra Azmi Aziz Sri Winarsih Ardian Rizal 1Master Program in Biomedical Science Faculty of Medicine Universitas Brawijaya Malang Indonesia 2Department of Orthopaedics and Traumatology Faculty of Medicine Universitas Brawijaya dr. Saiful Anwar General Hospital Malang Indonesia 3Doctoral Program in Medicine Faculty of Medicine Universitas Brawijaya Malang Indonesia 4Medical Doctor Study Progam Faculty of Medicine Universitas Brawijaya Indonesia 5Pharmacy Study Program Faculty of Medicine Universitas Brawijaya Indonesia 6Department of Cardiology and Vascular Medicine Faculty of Medicine Universitas Brawijaya dr. Saiful Anwar General Hospital Malang Indonesia

Menopause is a condition where a woman lost protection from estrogen, causing susceptibility to arterial stenosis (atherosclerosis) induced by increased free radicals’ activity and inflammation. It was reported that nicotine can reduce free radicals’ activity and act as an anti-inflammatory agent. This study means to explore the possibility of nicotine usage to prevent atherosclerosis and to reduce free radical activity. We did experimental randomized post-test only controlled group research in 18-20 weeks old female Rattus norvegicus. We examined tail arterial histomorphometry, Wall to Lumen Ratio (WTLR), and Malondialdehyde (MDA) level of abdominal aorta as markers of free radical activity. The first group was normal rats (Sham). The second group represents the ovariectomy group (ovariectomy-only/Ovx). The third to the fifth group were ovariectomized and given nicotine in a dose of 0.25 mg/kg body weight (P1), 0.5 mg/kg (P2), and 0.75 mg/kg (P3). Group P1-P3 was given daily nicotine by oral route for 4 weeks, started from 3 weeks post-ovariectomy. MDA levels of P3 were significantly lower than Ovx group (p = 0.036, Tukey HSD). WTLR measurement found no significant differences across all groups. Finally, we conclude that nicotine has antioxidant properties and does not affect tail artery WTLR.

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Reducing room noise using polyurethane-urea biofoam/industrial plywood sawdust waste (PUU/IPSW)

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AIP Conference Proceedings 2020年第1期2296卷

作者： Herlina Nofitasari Mohammad Masykuri Ari Handono Ramelan 1Master of Environmental Science Study Program Postgraduate Universitas Sebelas Maret Jl. Ir. Sutami 36A Surakarta Indonesia 2Chemistry Education Department Faculty of Teacher Training and Education Universitas Sebelas Maret Jl. Ir. Sutami 36A Surakarta Indonesia 3Physics Department Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Jl. Ir. Sutami 36A Surakarta Indonesia

Rapid industrial growth leads to environmental problems, including room noise problems. Noise-reducing materials in the market have not fully reduced the maximum noise intensity to 85 dB yet according to the standard quality of room noise. On the other hand, the plywood industry produces sawdust waste that has not been widely used. The synthesis of noise reduction material with sawdust waste additives is the right alternative. This research aims to synthesize and characterize the polyurethane-urea/plywood sawdust waste (PUU/IPSW) biofoam as a noise reducing material. The PUU/IPSW biofoam synthesis method is performed using a one shot process technique with variations in waste composition of 0 - 5% (w/w), maleic anhydric (MAH) 0.1% (w/w) as a coupling agent and ethylenediamine (EDA) of 1% (w/w) as a chain extender. Structural identification of biofoam was carried out using Fourier Transform Infra-red Spectroscopy (FTIR). The acoustic test was carried out according to ASTM-E1050 standards. From the visual observation, it shows that PUU/IPSW biofoam has physical characteristics of the yellow-brown color and soft-hard texture. Based on FTIR spectra identification, biofoam contains CH, CO and OH chemical groups. The results of acoustic performance test show that the biofoam noise absorption coefficient is very good.

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Effect of guided inquiry learning model with virtual and real learning media on the improvement of learning result viewed from cooperation skills of the students in grade VIII of state junior secondary school 1 of Karanganyar

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AIP Conference Proceedings 2018年第1期2014卷

作者： Emi Wijayanti Ashadi Widha Sunarno 1Master’s Degree Program in Science Education Sebelas Maret University Surakarta 57126 Indonesia 2State Junior Secondary School 1 of Karanganyar Indonesia

The objectives of this research are to analyze the difference of learning result between the students with the guided inquiry learning model with virtual learning media and those with the guided inquiry learning model with real learning media viewed from their cooperation skills and the interaction of effect between the virtual and real learning media and the cooperation skills on the students’ learning result. The subjects of the research were the students in Grade VIII of the school. The subjects were determined randomly. The data of the research were collected through test of learning result and questionnaire of cooperation skills and analyzed by using the descriptive quantitative technique of analysis. The results of the research are as follows. There was a difference of learning result viewed from the cooperation skills. The students using the guided inquiry model with virtual learning media had a better learning result than those using the guided inquiry model with real learning media. In addition, there was not any interaction of effect between the guided inquiry learning model with virtual and real learning media and the cooperation skills.

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Ethanolic extract of Centella asiatica increased IGF-1 and IRS expression in zebrafish (Danio rerio) rotenone-induced

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AIP Conference Proceedings 2020年第1期2231卷

作者： Fitra Arsy Nur Cory’ah Vanda Primaditya Linda Ika Puspita Ariati Zakiah Dyah Woro Kartiko Kusumo Wardani Dianita Primihastuti Yuningsih Husnul Khotimah Mohammad Muljohadi Ali Nurdiana 1Master Program of Midwifery Faculty of Medicine Universitas Brawijaya Malang East Java Indonesia 2Poltekkes Kemenkes Mataram Midwifery Academy NTB Indonesia 3Midwifery Academy of Berlian Nusantara Magetan East Java Indonesia 4Midwifery Academy of Jember Jember East Java Indonesia 5University of Darul Ulum Jombang High Islamic Boarding School Jombang East Java Indonesia 6Institute of Health Science Sint Carolus Jakarta Indonesia 7Institute of Health Science William Booth Surabaya East Java Indonesia 8Institute of Health Science Dr. Soebandi Jember East Java Indonesia 9Laboratory of Pharmacology Faculty of Medicine Universitas Brawijaya Malang East Java Indonesia

IRS (insulin receptor substrate) is responsible for signal transduction of Insulin-like growth factor-1 (IGF-1) for cell differentiation, proliferation, and anti-apoptosis. Centella asiatica (CA) contains triterpenes as antioxidant and anti-inflammatory, macro and micronutrients. This study observed the effect of CA extract on the expression of IGF-1, IRS, and the linear growth of rotenone-induced zebrafish larvae. The zebrafish embryos were divided into five groups: control, Rotenone 12 ppb, Rotenone, and CA extract concentration 2.5, 5, and 10 μg/ml, respectively exposed from 2-hours post fertilization (hpf) until 3-days post-fertilization (dpf). The expression of IGF-1 and IRS were conducted at 9 dpf by immune-histochemistry whole-mount. The body length was measured at 3, 6, and 9 dpf using Image Raster software. The data were analyzed using one-way ANOVA. The results showed that the administration of CA extract could increase the expression of IGF-1 and IRS in rotenone-induced zebrafish larvae. The measurement of body length showed that rotenone reduced the body length of larvae after 6 dpf, and 5 μg/mL of CA extract significantly increased the body length at 6 and 9 dpf. It can be concluded that CA extract increased the body length of zebrafish larvae through the increasing of IGF-1 and IRS signaling.

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Analytical study of sandwich structures using Euler–Bernoulli beam equation

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AIP Conference Proceedings 2017年第1期1798卷

作者： Hui Xue H. Khawaja 1Master Student Department of Computer Science and Computational Engineering UiT The Arctic University of Norway Narvik Norway 2Associate Professor Department of Engineering and Safety UiT The Arctic University of Norway Tromsø Norway

This paper presents an analytical study of sandwich structures. In this study, the Euler–Bernoulli beam equation is solved analytically for a four-point bending problem. Appropriate initial and boundary conditions are specified to enclose the problem. In addition, the balance coefficient is calculated and the Rule of Mixtures is applied. The focus of this study is to determine the effective material properties and geometric features such as the moment of inertia of a sandwich beam. The effective parameters help in the development of a generic analytical correlation for complex sandwich structures from the perspective of four-point bending calculations. The main outcomes of these analytical calculations are the lateral displacements and longitudinal stresses for each particular material in the sandwich structure.

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computational study to determine redox potential of nitroxide radical and their derivatives compounds along with their analysis as redox-coupe in dye sensitized solar cell’s (DSSC)

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AIP Conference Proceedings 2018年第1期2049卷

作者： Zahra R. Puteri Yuly Kusumawati Athar L. Ivansyah Muhamad A. Martoprawiro 1Chemistry Department Faculty of Natural Sciences Institut Tehnologi Sepuluh Nopember (ITS) ITS Campus Sukolilo Surabaya East Java 60111 Indonesia 2Master Program in Computational Science Faculty of Mathematics and Natural Science Institut Tehnologi Bandung (ITB) Jl. Ganesha 10 Bandung West Java 401232 Indonesia 3Department Chemistry Faculty of Mathematics and Natural Science Institut Tehnologi Bandung Jl. Ganesha 10 Bandung West Java 401232 Indonesia

The determination of redox potential (E°) was performed by computational study with variation of correlation-function B3LYP, CAM-B3LYP and ωb97-XD for pipiridine, azaadamantane and azaphenalene of nitroxide radical compounds with DFT method. The basis set of 6-13G(d) was used for geometry optimization and frequency calculation. The results showed that the calculation of redox potential with CAM-B3LYP method has the smallest error that is 1.191%. 4-hydroxy TEMPO compound with E° of 0.754 V (vs NHE) is promising to be used as a redox couple on DSSC’s application due to Voc, ΔEregeneration and RCT value consideration.

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