bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of charge on graphene vacancy for hydrogen storage application
Authors: Sunnardianto Gagus Ketut , Larasati Intan Ayu , Triawan Farid , Aamer Ammar M.
Published: September 2018

We investigated the effect of charge to the interaction between a hydrogen molecule and a hydrogenated vacancy V11 in graphene surface based on density functional theory calculation. V11 is graphene mono-vacancy with two hydrogen atoms adsorbed at the edge of vacancy. The hydrogen molecule physisorbed on deformed V11 is shown to dissociate producing a known stable vacancy V211, in which two carbon atoms are mono-hydrogenated and another is di-hydrogenated at the edge of the vacancy. We found that additional electron charge to the system could influence the reaction pathways and reduced the energy barrier for dissociation adsorption and desorption process provides a basic understanding in the mechanism of hydrogenation processes on graphene vacancy for hydrogen storage aplication.
Synthesis of zeolite L using rice husk ash silica for adsorption of methylene blue: kinetic and adsorption isotherm
Authors: Sundari Citra Deliana Dewi , Setiadji Soni , Rohmatullah Yusuf , Sanusi Sanusi , Nurbaeti Denia Febby , Novianti Ira , Farida Ida , Nurohmah Ai , Ivansyah Atthar Luqman
Published: September 2018

Rice husk has a high silica content, so it can be utilized as silica source for zeolite synthesis. In this research, synthesis of zeolite L has been done using silica from rice husk ash without organic template. The synthesized zeolite L is then used as an adsorbent to adsorb methylene blue dye. The steps of zeolite L synthesis include: silica extraction from rice husk ash using NaOH and zeolite L synthesis using hydrothermal method with molar ratio 10 SiO2: Al2O3: 4 K2O: 100 H2O at 170°C for 24 hours. The resulting Zeolite L was then characterized by XRD and SEM. The absorption capacity of methylene blue solution by zeolite L was observed experimentally through the effect of pH of the solution, contact time, and initial concentration of the solution, then determining the isotherm and its absorption kinetics. From XRD and SEM results of zeolite L sample, it is shown that zeolite L has been formed and its particle morphology is a hollow cylinder with cylinder diameter of 0.049 - 0.123 μm. The adsorption process refers to the Freundlich isotherm model which provides the highest correlation coefficient. The methylene blue adsorption process by zeolite L follows pseudo second-order kinetics.
The increased use value of bamboo leaves as silica source for t-type zeolite synthesis
Authors: Setiadji Soni , Sundari Citra Deliana Dewi , Lala Endang , Nurbaeti Denia Febby , Novianti Ira , Suhendar Dede , Darmalaksana Wahyudin , Ivansyah Atthar Luqman
Published: September 2018

T-type zeolite can be used as catalyst, adsorbent, and membranes for gas separation. The synthesis of T-type zeolite needs to be optimized in both of the method and source of precursor, because of its relatively high price. In this research, the synthesis is done using silica extracted from bamboo leaves instead of commercial silica. This increases the value of the bamboo leaves and the cost-performance of zeolite synthesis. The silica was extracted from bamboo leaves ash using alkaline solvent. The extracted silica has 81.76% of purity and an amorphous phase. The T-type zeolite was synthesized using the molar composition of 0.15 Na2O : 0.025 Al : 0.15 K2O : 1 SiO2 : 15 H2O : 0.06 TMAOH, under hydrothermal method and heating process for 4 days, 60°C for 2 days and 120°C for the next 2 days. The characterization method using X-Ray Diffraction and Infra-Red Spectroscopy were performed to confirm the formation of T-type zeolite. The results of Scanning Electron Microscope (SEM) analysis show that the formed T-type zeolite has erionite cylindrical crystal shape.
Screening of cellulose- and lignin-degrading fungi for improving nutritive quality of ruminant feed
Authors: Fauzi Muhammad , Mubarik Nisa Rachmania , Jayanegara Anuraga
Published: September 2018

This experiment aimed to screen some cellulose- and lignin-degrading fungal species for improving nutritive quality of ruminant feed. Fungal species used wereGanoderma lucidum, Pleurotus ostreatus, Phanerochaete chrysosporium, andTrametes visicolor. These fungal species were grown on Potato Dextrose Broth (PDB) medium that added with 0.5 g substrate, i.e. either rice straw, rice bran or carboxymethyl cellulose for 12 days at room temperature. Harvesting was performed in order to separate fungal mycelium and supernatant that contained crude cellulase enzyme. Among the fungi observed,Ganoderma lucidumhad the highest cellulase activity, i.e. 4.02 U/mg. Cellulase activities ofPleurotus ostreatus, Phanerochaete chrysosporium, andTrametes visicolorwere 1.53, 1.08, and 0.13 U/mg, respectively.Ganoderma lucidumwas further investigated for its ligninolytic enzyme activity, i.e. laccase and manganese peroxidase. It was observed that the fungi had laccase and manganese peroxidase activities of 368.95 and 33.89 U/mL, respectively. Crude enzymes ofGanoderma lucidumthat contain cellulase, laccase and manganese peroxidase were further used to increase nutritive quality of rice straw and subjected to in vitro incubation with rumen fluid of cattle.
Vaginal swab cytology aplication to determine the estrus cycle of lowland anoa (bubalus depressicornis, smith, 1927) in captivity
Authors: Mayasari Anita , Suryawan Ady , Christita Margaretta , Simamora Adven Tri Joy , Abinawanto Abinawanto , Suryanda Ade , Bowolaksono Anom
Published: September 2018

Anoa is an endemic species of Indonesia that is listed as endangered in the IUCN Redlist list and also included in the Appendix I CITES. Anoa’s reproduction have been constraint due to their natural behaviour. This animal is a solitary animal, monogamous, wild and aggressive, Incorrect mating time can lead the into a fight between the male and female. Information about the estrus cycle is very important in determining the optimal mating time for anoa. The study aim is to determine the estrus cycle of anoa based on behaviour and change in the vaginal epithelial cells. Behavioural data were observed by focal animal sampling technique to 3 female anoas in Anoa Breeding Center Manado during January-August 2017 at 07.00-17.00 CIT. Vaginal swabs cytology was done during July-August 2017 in the morning and afternoon by using terilized cotton swab and Giemsa stain. The vaginal swabs cytology techniques with Giemsa staining can be used to determine the changes in epithelial cells and confirm the estrus phase of anoa. Based on vaginal cytology the length of the estrus cycle of each individual anoa at the Anoa Breeding Center is different. At Manis the lengt of estrus cycle ranges 23 days, Rita 15 days, Denok 21 days and Ana is unidentified
Tumour necrosis factor-alpha level among travellers contracted with dengue virus in Bali
Authors: Widhidewi N W , Masyeni S , Sukmawati H
Published: September 2018

Dengue infection burden has been predicted increase three times greater recently. Severe dengue infection associated with the high generation of inflammatory cytokines leads to vascular endothelial instability. Hence, the current study aim to evaluate the level of TNF-α among travellers infected with DENV in Bali. An observational prospective study has been conducted on travellers presenting with dengue symptoms who admitted at Kasih Ibu Hospital Bali in 2017. Majority of the sample was female (61%) which median (range) age was 29 (15.4-73.1) years old. The median (range) nadir platelet was 74(29-194) 103cell/μL. The temporal predominant serotype was DENV-3 (29.3%), followed by DENV-2 (24.4%), DENV-1 (13.6%), and DENV-4 (2.4%). The study found concurrent DENV infection. Diagnosis of DF was almost equal with DHF. Level of TNF-α found 3 times higher in DHF than DF patients.
Study experimental of flame-spread rate and spread limit distance ofbio-solardroplets in microgravity combustion
Authors: Fitriana Laila , Gumelar Bawono Widyo , Saputro Herman , Firdani Tutuko , Muslim Riyadi , Ismunandar Hengky Aries , Zainudin Rifqi Arif , Aji Rusdan Aditya Nugroho , Rahmadi Revelation , Sutrisno Valiant L P , Wijayanto Danar S , Bugis Husin
Published: September 2018

The most important issues in spray combustion science are how to understand the mechanism of the combustion of liquid fuel spray, especially in the flame-spread phenomenon. In spray combustion, combustion is the existence of the group is very important in order to obtain the stable combustion. Therefore, the flame spread among fuel droplets affects the occurrence of stable combustion in the spray combustion engine. This study was focused on phenomenon on diesel combustion engines. This research was conducted to study the behavior of flame spread rate of flame spread and limit the distance of bio-diesel liquid droplets. This research method was used experimental research. Microgravity condition was Obtained through the free fall tower with the height of the tower used is 6 m. Observed droplets suspended was placed on SiC fibers with different distance and droplet size 1 mm. This study observed Also the influence of the flame propagation direction of the burning droplet to the next burning droplets that lies in the direction and perpendicular to the direction of the flame propagation. The results showed that the bio-diesel fuel droplet Igniter (I) could burn next droplet (A)at a distance (S/d0) = 8.
Numerical studies influence configuration fairing flap track airfoil type naca 4412 and naca 6412 character unmanned aerial vehicle (UAV)
Authors: Pratama Handrico Ramelan , Bramantya Muhammad Agung
Published: September 2018

Wings have a function of changing the air flowing into force lift, and drag. It can reduce the drag is fairing flap track, where its function can reduce the obstacles caused by the effects of compressibility, fairing flap track also has a major influence on reducing the coefficient drag on airfoil. In this study, we observed the addition of fairing flap track to airfoil, fairing inspired by Sailfish and Blue Shark fish, its fins known to have speeds of 60 km/h. The independent variable in this research is compare airfoil NACA 4412 and NACA 6412, while the dependent variable is influence of fairing flap track configuration on unmanned aerial vehicle (UAV) character by knowing coefficient lift, coefficient drag and lift to drag ratio using software computational fluid dynamic (CFD). Simulation results know that the coefficient drag airfoil NACA 4412 decreased 0.3%, coefficient lift decreased 0.5% and coefficient drag airfoil NACA 6412 also decreased 0.4%, coefficient lift decreased 0.7%. It can be concluded that the addition of fairing on airfoil is very influential in reducing the value of coefficient drag and improve the coefficient lift on airfoil.
Low cost carbon electrodes to produce salinity gradient energy using reverse electrodialysis membranes: Effect of feed flow velocities and addition of Mg2+
Authors: Najmiyah Tsalis Wahyu , Aziyah Lina , Hendrawan Yusuf , Maharani Dewi Maya , Hawa La Choviya , Wibisono Yusuf
Published: September 2018

In this research , we investigate the effect of feed flow velocity in both monovalent (Na+) and divalent (Mg2+) salt water solutions to harvest the electrical energy from the reverse electro dialysis (RED) membranes module. The synthetic sea water solution uses 0.5 M concentration of salt and the synthetic river water salt concentration of 0.017 M were used. The carbon electrode was used, due to its low cost, higher melting point, and insoluble in water. Variation of feed flow velocities (sea water and synthetic river water) of 8 cm2/s, 14 cm2/s, 19 cm2/s were used, in addition to compare electrical energy produced from the used of monovalent and divalent ions. The best result was obtained by using the velocity of feed solution 19 cm2/s with the electricty value of 8.033 mV, 0.002 Ω/cm2 and power density of 1,141 mW/m2, while the influence of the addition of Mg2 + ion in the feed solution resulted the electricty value of 4.47 mV, 0.003 Ω/cm2 and power density of 0.15 mW/m2. Albeit the results, some more configuration is needed and worth to be investigated in the future.
Spectral displacement (SD) of banda aceh’s soft soil for seismic vulnerability assessment
Authors: Saidi Taufiq , Aulia Teuku Budi , Setiawan Bambang , Abdullah Nora , Hasan Muttaqin
Published: September 2018

Reliable spectral displacement (SD) in a wide range of response periods is crucial in seismic vulnerability assessment for Banda Aceh-Indonesia as the city is founded on a thick-soft soil. This SD is excellent for estimating building drift ratio from which the vulnerability of building is assessed. SD can be obtained from conversion of the acceleration spectra (converted SD) and site response analysis (analyzed SD). In this paper, both converted- and analysed-SDs are developed for Banda Aceh’s soft soil case using three historical seismic events of the 2012 Simeulue II, the 2013 Mane-Geumpang, and the 2013 Bener Meriah earthquakes and three soil models from which acceleration-displacement response spectrum (ADRS) of Banda Aceh’s soft soil is proposed. This proposed ADRS is compared to the generic response spectra of Centre of Research and Development of Housing and Settlement (PUSKIM) Indonesia. It can be concluded that the Proposed ADRSs can be used as another source in determining the performance of a building beside the PUSKIM ADRSs. Furthermore, the developed SDs were used to calculate the drift of 2-, 3-, and 4-storey typical shop-house buildings at Banda Aceh-Indonesia.
Site response analysis for estimating seismic site amplification in the case of Banda Aceh - Indonesia
Authors: Yunita Halida , Setiawan Bambang , Saidi Taufiq , Abdullah Nora
Published: September 2018

The city of Banda Aceh is potentially exposed to a significant seismic hazard of seismic site amplification. Estimation of seismic site amplification of the city is urgently required for any mitigation efforts as the city is founded on a thick, soft layer. This study aims to estimate seismic site amplification of Banda Aceh's soil. Analytical models have demonstrated that they can simulate reasonably well the seismic ground motions amplification. The most widely used model is the equivalent linear approach. The approach computes the ground response of horizontally layered soil deposits subjected to transient and vertically propagating shear waves through a one-dimensional soil column. As aforementioned, this study focuses on Banda Aceh-Indonesia which is founded on thick alluvium. Three actual historical time histories and three developed sub-surface models were used to estimate the seismic site amplification of Banda Aceh's soft soil. The used time histories are of 2012 M8.1 Simeulue earthquake, 2013 M6.0 Mane-Geumpang earthquake and 2013 M6.2 Bener Meriah earthquake. Three sub-surface models of three separate sites across the city of Banda Aceh were developed. The site response analysis results reveal the ground motions amplification of Banda Aceh's soils of up to 4.3. Thus, applying the seismic site amplification for structural design at Banda Aceh can be further works.
Technical feasibility analysis of reservoir on agricultural area
Authors: Permana Sulwan
Published: September 2018

The availability of raw water is a major requirement to increase agricultural production, especially rice, as well as for domestic purposes for the community. One source of water is rivers used by communities to fill daily needs for both agricultural and other needs. This research is a survey research, conducted in Puspamukti Village, Subdistrict Cigalontang, Tasikmalaya Regency. With The purpose of knowing the feasibility of reservoir development. The source of water used at the research locus is from the river and several springs utilized by the community to irrigate the agricultural area of 750 ha. Based on topographical conditions, the area has a potential to be made into a reservoir that could be as a supply for domestic agricultural and water areas. The method of calculating the average rainfall of 2 rain posts is done by various return period, the calculation of dependable flow and water balance, and the design flood discharge. The watershed area is 6.4 km2. The maximum dependable flow is 0, 6 m3/sec. Based on the dependable flow, area that can be irrigated is only about 440 ha., and the domestic needs is about 9,1 lt/sec. The reservoir development at the research locus is considered less feasible.
Electrical discharge phenomenon of electrode gaps in oil insulation
Authors: Nainggolan Jannus Maurits , Iwa Ganiwa MK , Hudaya Chairul , Rahardjo Amien
Published: September 2018

An electrical discharge is a phenomenon of ionization of an insulating material. Ionization can occur when the stress applied to the insulating material begins to close to the maximum value of stress can be restrained. In this study, a high voltage was given on a point-plane electrode that would produce ionization (discharge) on the gap of the electrode. The point-plane electrode was placed in an iron tank containing oil insulation. The distance of a gap between the electrodes varies from 2 mm to 4 mm. Then, the signal from the occurrence of electrical discharge was capture using an acoustic emission (AE) sensor placed on the outside of the tank wall. The detected acoustic emission signal was amplified with a 40 dB amplifier, so the signal would be easier to analyze. At the other condition, a solid layer of insulation with a thickness of 4 mm would also be placed on the gap the electrode. The result of the signal analysis showed small differences in the intensity of the detected AE signal at all the distance of electrode gaps. The main frequency component of the detected AE signal at all electrode gaps was several hundred kilohertz.
Development of a secured room access system based on face recognition using Raspberry Pi and Android based smartphone
Authors: Najmurrokhman Asep , Kusnandar Kusnandar , Krama Arief Budiman , Djamal Esmeralda Contessa , Rahim Robbi
Published: September 2018

Security issues are an important part of everyday life. A vital link in security chain is the identification of users who will enter the room. This paper describes the prototype of a secured room access control system based on face recognition. The system comprises a webcam to detect faces and a solenoid door lock for accessing the room. Every user detected by the webcam will be checked for compatibility with the database in the system. If the user has access rights then the solenoid door lock will open and the user can enter the room. Otherwise, the data will be sent to the master user via Android-based smartphone that installed certain applications. If the user is recognized by the master user, then the solenoid door lock will be opened through the signal sent from the smartphone. However, if the user is not recognized, then the buzzer will alert. The main control circuit on this system is Raspberry pi. The software used is OpenCV Library which is useful to display and process the image produced by webcam. In this paper, we employ Haar Cascade Classifier in an image processing of user face to render the face detection with high accuracy.
Eco-electric energy generator system using human exercise activities
Authors: Setya Prabowo Frans , Pangaribuan Porman , Darlis Denny
Published: September 2018

Today human need for electrical energy is very high. For that we need to find an alternative power plant renewable energy, especially environmentally friendly. One type of an environmenttally friendly power plant is a generator which is harnessing human-generated energy when exercising by using a static bike. This equipment is used on average 6 hours per day at 5.00-8.00 hours and 17:00 to 20:00 hours. In this research, a power plant system by utilizing human motion exercising from wheel rotary mechanics, generators, BCU (Battery Control Unit), and battery will be designed. The rider can see from the LCD when the battery condition is full, the battery is charge, the battery does not get energy from the generator, inverter on, inverter off, battery voltage and generator voltage. At the testing stage, 14 participants cycling for 15 minutes produced electrical energy on average of 594 Joules, with an age range of 20-23 years old. The resulting energy can turn on the light 3 Watt between 160 -251 seconds or 198 seconds on average. When accumulated 14 cycled samples with 15 minutes each (total 210 minutes) can generate 8313 Joule electric energy and can turn on 3 Watt lamp for 46 minutes 11 seconds.
Wireless body area network's application for motion detection based on Android smartwatch
Authors: Yundra Eppy , Widodo Arif , Puspitaningayu Pradini , Kartini Unit Three
Published: September 2018

Short-range, wireless communications in the vicinity of, or inside, a human body (but not limited to humans) are specified in this standard. It uses existing industrial scientific medical (ISM) bands as well as frequency bands approved by national medical and/or regulatory authorities. These sensors provide accurate and reliable information about the situation or activity occurring at any time. This high responsiveness of these sensors has made lives easy and safe. This article will perform an investigation on the WBAN's application for motion detection based on android smartwatch. The main problem is how to the sensors that attached on the human body can send of data via Bluetooth and read the motion and orientation of the body and display in the graph form. However, if the sensors do not match, the result of output display inappropriate. This article proposed method by using accelerometer and gyroscope sensors which are integrated with smartwatch to overcome the main problem. This application will display results in the form of numeric values and then convert in graph form. These results have proven that WBAN's application for motion sensing can be used for detection of motion and orientation via Bluetooth based on android smartwatch.
Effects of stirring parameters on the rheocast microstructure and mechanical properties of aluminum alloy ADC12
Authors: Rasyid Syaharuddin , Arif Effendy , Arsyad Hairul , Syahid Muhammad
Published: September 2018

In this study, effects of stirring time and stirring speed on the microstructure of semisolid rheocast (SSR) aluminum alloy ADC12 were examined. The research method was done by gravity casting using a metal mold. The aluminum ADC12 slurry is stirred by a mechanical stirrer (round rod stirrer) at 610OC with a variation of speed 0, 250, 300, 350 rpm for 0, 20, 40, 60 seconds. Furthermore, the aluminum slurry of ADC12 is poured on a metal mold with temperature 600OC. The microstructure characteristics were examined by direct observation using optical microscopy, secondary -Al phase dendrite arm spacing, shape factor, and Si eutectic phase were identified. The mechanical properties were investigated by hardness test and tensile test. A short period of stirring below the liquidus temperature to form a non-dendritic structure. The final morphology of the primary particles after a short period of stirring time has little impact as the stirring time increases. The optimal mechanical properties (hardness and tensile strength) were obtained at 20 seconds of stirring time and 300 rpm of stirring rate.
Effects of alkanolamide addition on cure characteristics, crosslink density and tensile properties of carbon-black-filled styrene-butadiene rubber compounds
Authors: Surya Indra , Ismail Hanafi
Published: September 2018

By using a semi-efficient sulphur vulcanisation system, the effects of alkanolamide (ALK) addition on cure characteristics, crosslink density and tensile properties of carbon black (CB)-filled styrene-butadiene rubber (SBR) compounds were investigated. The ALK was prepared from Refined Bleached Deodorized Palm Stearin and diethanolamine and added into the CB-filled SBR compounds. The ALK loadings were 1.0, 3.0, 5.0 and 7.0 phr. It was found that ALK decreased the scorch and cure times of the CB-filled SBR compounds. ALK also improved the tensile modulus and tensile strength; especially up to a 5.0 phr of loading. The crosslink density measurement proved that the 5.0 phr of ALK exhibited the highest degree of crosslink density which caused the highest in tensile modulus and tensile strength. Due to its plasticity effect, ALK increased the elongation at break of the CB-filled SBR vulcanisates.
Design of water hyacinth utilization as renewable electricity energy source in Tondano Lake
Authors: Sumual Herry , Warouw Felly , Kamagi Marlon
Published: September 2018

Energy security includes three aspects, namely the availability of energy sources, affordability of energy supply, and the continuation of new renewable energy development. This study aims to contribute in overcoming energy problems while solving environmental problems by utilizing water hyacinth in Lake Tondano, North Sulawesi Province, Indonesia. Through the approach of environmental science, developed scenario of water hyacinth utilization design to become energy source of biomass power plant (PLB). This scenario is the initial concept of the creation of water hyacinth as an alternative renewable energy. In order to ensure the sustainability of this scenario, a technological, technical, environmental and social assessment of technology diffusion was developed. The results show PLB design scenarios to be a new business that is profitable for the community in encouraging local economic development and becoming a solution to the problem of water hyacinth. Utilization of water hyacinth as an alternative energy in addition to improving the economy of society also increases the economic activities of a region. This design scenario provides insight into steps to develop new findings such as small-scale PLB designs in rural areas of the developing world. Finally PLB design scenarios can be a transfer of knowledge to local communities, empowering them to utilize biomass resources as a stimulus for economic prosperity in the region.
The application of grey water recycling at Gayanti City Apartment, South Jakarta
Authors: Muthiya A , Tazkiaturrizki T , Ratnaningsih R
Published: September 2018

This planning is aim to design the plumbing system at Gayanti City Apartment with a separate system or grey water recycling system so that the efficiency cost of the recycling system will be known. Clean water system from PAM JAYA DKI and recycle water system from grey water that distributed to Waste Water Treatment Plant (WWTP) to be treated and reused for flushing closet and watering plants are designed for this apartment. The amount of the clean water needed is 116.6 m3/day and the amount of the recycle water needed is 18.64 m3/day. Water supply system that applied to this apartment is roof tank system. Calculation of water consumption's fluctuations to determine the capacity of reservoirs and pumps are using Four Winds Apartment, Bellagio Apartment, Thamrin Residences Apartment, and Karet Kuningan Apartment as a comparison with the same criteria as the designed apartment. The capacity of the clean ground water tank is 123.5 m3and the recycle ground water tank is 12 m3. Transfer pumps work for 12 hour/day (1 time pause) and the capacity of clean roof water tank is 31.5 m3and the recycled one is 6.7 m3. Based on the chosen alternative in design, Gayanti City Apartment is using the first water supply system alternative that needs 18 stand pipes of clean water and 18 stands pipes of recycle water with 4 PRVs mounted on each stand pipes and booster pump installed for the top 6 floors. The amount of clean water needed is 116.6 m3/day and recycle water is 18.64 m3/day. Waste water produced is equal to 93.28 m3which 80% of it is the grey water that will be treated in Waste Water Treatment Plant into recycle water. Total amount of clean and recycled water investment and reservoir constructions is Rp. 1,637,227,201,- and percentage of clean water that can be saved from the application of recycling system is 18% with total efficiency cost Rp 233,932/day or Rp 7,017,960/month.
Chlorpyrifos removal by Thiobacillus sp. and Clostridium sp. in liquid medium
Authors: Sunaryo Thalia , Widyatmoko Hilarion , Rinanti Astri
Published: September 2018

The bioremediation research of chlorpyrifos has been done to remove the concentration of chlorphyrifos using the natural bacterial Thiobacillus sp. and Clostridium sp.. The efficiency of chlorpyrifos removal was determined by the temperature and contact time. The research was done by adding 100 ppm of chlorpyrifos into the Stone Mineral Salt solution (SMSs) under controlled condition, then each bacterial are added as much as 10% (v/v) with pH 7. To obtain optimum efficiency, this study was conducted with temperature variation (°C) 25, 30, 35, 40 and contact time (hours) 12, 24, 36, 48. Based on Gas Chromatography Mass Spektrofotometer (GC-MS) analysis, the efficiency of removal at temperature (°C) 25, 30, 35, 40 are 43%, 68%, 71% and 52% respectively, while the removal efficiency at contact time (hours) 12, 24, 36, 48 are 43%, 49%, 74%, and 36%. The result showed that 74% removal efficiency by Thiobacillus sp. and Clostridium sp. obtained at 35°C in 36 hours of contact time. Thus, the mixed culture of Thiobacillus sp. and Clostridium sp. are able to synergize for removing the chlorpyrifos at 100 ppm.
Utilization of solar energy for sea water and brackish water desalination using vacuum pressure and number of trays variations
Authors: Kusumadewi Riana Ayu , Notodarmodjo Suprihanto , Helmy Qomarudin
Published: September 2018

Surface water pollution caused by industrial, agricultural, and domestic waste limit the availability of clean water sources. One solution is to use sea water as a source of clean water. Seawater desalination using solar energy is now growing. The purpose of this research is to study the effectiveness of desalination equipment with variation of vacuum pressure, number of trays, and type of feed water. First, the environmental conditions were measured, i.e. the intensity of solar radiation, ambient air temperature, and relative humidity. Then the distillator efficiency by variation of vacuum pressure, number of trays, and type of feed water was measured. From the result of observation, it was found that with radiation intensity ranged from 3967.86 - 6459.99 W/m2.day, ambient air temperature 22 - 28°C, and relative humidity 55 - 80%, distilled water produced was 7595 - 11,146 ml/day. The distillator efficiency for pressure of -0.05; -0.1; -0.15, -0.2; -0.25; -0.3 bar respectively were 25.54; 29.45; 29.56; 30.18; 30.90; and 37.77%. Distillator efficiency for evaporator from without tray until five trays were 24.89; 29.01; 27.88; 30.03; 34.05; and 37.77%. It was found that optimum distillator efficiency achieved at vacuum pressure of -0.3 bar and five trays in evaporator. Distillator efficiency for sea water (efficiency of 21.79%) was lower than brackish water (efficiency of 37.77%).
Alternative solution for deforestation: under soil house as architecture experimental design
Authors: Almunir Farouk Irfan , Federlina Hena Safna , Barliana M. Syaom , Susanti Indah
Published: September 2018

Architecture is a built environment to fulfil the needs of human inhabitants. However, behind the aesthetics of beauty artificial that formed, the inherent in it, architecture has different impact to the nature related with destruction. Rapid deforestation has its way alongside with the build of housing, agriculture, and industry. To answer the related problem, the experimental study should be offered. Therefore, this paper puts forward the solution for the undersoil house design. In the future, people might adapt with unpredicted condition, so ask the new design to leave must be set up in an experimental manner.
Deployable structure as architectural active structure on sports building in Bandung
Authors: Salamah Hafshah , Widyowijatnoko Andry , Wonorahardjo Surjamanto , Aditra Rakhmat Fitranto
Published: September 2018

Buildings not only can be resilient from environmental changing by passive design, but also have ability to adapt the environment by active system. By using deployable structure, this system can be provided by changing multiple form based on its purpose to cover the building. To provide these conditions, deployable structure need to be explored and analyzed to develop compatible structure in the building. Case of study in this research is Pajajaran sports building in Bandung. The research method is exploration of form and movement based on limited variables, there are activities and weather changing/climate condition. These variables formulated into two conditions, open and closed building. Open building state in sports building have requirement that either natural or artificial lighting should not cause glare in field area. So, natural lighting was simulated by using Ecotect Analysis to find solar path movement and shadow angle. The result of the solar path simulation shows that daily solar movement must be responded directly because high rotation rate and regular changes, while the monthly sun path does not require significant movement due to low rotation rate and insignificant changes. This study will show design process of deployable structure into sports building.
Mass Imbalance Compensation Control for Stabilized Platform Based on UKF Identification
Authors: Zhang WeiMing , Shi ZeLin
Published: September 2018

Due to the mass imbalance about the center of rotation, the stability of stabilized platform system degrades with carrier’s disturbances. Various feed-forward control methods are provided by reaserchers to solve this problem, however these methods are not well applied because the eccentricity of stabilized platform could not be measured directly. The dynamics model of a typical 2-axis stabilized platform is given. The eccentricity vector is identified through Unscented Kalman Filter(UKF) algorithm. Imbalance torque is precisely observed so that the real-time nonlinear compensation for mass imbalance is achieved through a feed-forward loop. The simulation result indicates that the Root Mean Squared Error (RMSE) of parameters estimation is 0.024 after convergence. the LOS stabilization with carrier’s 2.5Hz vibration is 0.04 rad/s, which improves 78% compared to conventional feed-back control.
Static analysis on spherical magnetically suspending rotor based on finite element
Authors: Wang Weijie , Yuan Ren , Yin Zengyuan
Published: September 2018

In this paper, the static mechanical properties of a spherical magnetically suspending rotor are studied based on the finite element analysis method. The structure of the spherical magnetically suspending rotor is designed. The characteristics of the spherical magnetically suspending rotor are analysed and the necessity of static analysis is pointed out. The main content and general flow of statics analysis are discussed. The two working modes (GUI mode and command flow mode based on APDL) of the finite element software ANSYS are compared and analysed. Then the finite element model of the spherical magnetically suspending rotor is established by the command flow method, and the detailed modelling steps are given. On this basis, the static characteristics of the spherical magnetically suspending rotor are simulated and analysed. The simulation results show that the maximum equivalent stress and rigid body displacement of the rotor are within the safety threshold at a design speed of 10000rpm.
Wheelchair Skills Training for Functional Activity in Adults with Cervical Spinal Cord Injury
Authors: Yeo Sang , Kwon Jung
Published: September 2018

Wheelchair skills training can improve independent wheeled mobility for daily living activities as well as functional and social participation of adults with cervical spinal cord injury (C-SCI). The objective of this study was to examine the effectiveness of wheelchair skills training in improving both wheelchair skills and upper arm skilled performance in adults with C-SCI. In a randomized controlled study, 24 adults with tetraplegia were randomized and allocated to training group (n=13) or control group (n=11). The training group attended wheelchair skills training sessions, whereas the control group attended conventional exercise sessions. All interventions lasted 8 weeks, with a frequency of 3 days per week. All individuals were tested with the Wheelchair Skills Test (WST) and the Van Lieshout Test (VLT). The test was repeated at pre- and post-training (after 4 weeks and 8 weeks). For WST, univariate analysis demonstrated significant main effects in between-group, within-group, and group-by-time interaction (p<0.05). VLT showed no significant effect in between-group comparison (p>0.05), whereas within-group comparison of test times and group-by-time interaction showed significant main effects (p<0.05). Thus, wheelchair skills training is more beneficial for adults with C-SCI than conventional exercise.
Medizinische Leistungen für ambulante
Versorgungsgruppen
Authors: Merins Elena , Tenckhoff Bernhard , Robra Bernt-Peter
Published: September 2018

Zielsetzung Morbidität und Versorgungsleistungen hängen über
evidenzbasierte Regeln, Patientenpräferenzen und Erfahrungen der medizinischen
Praxis miteinander zusammen, eine „feste Kopplung“ gibt es jedoch nicht. Mit dem
Ziel, ambulante Versorgungsgruppen zu beschreiben, wird ein Verfahren
vorgestellt, das Diagnosen und medizinische Leistungen der umfangreichen
Abrechnungsstatistik aufeinander bezieht.

Material und Methodik Grundlage sind bundesweite Abrechnungsdaten der
ambulanten Versorgung aus dem Jahr 2012. Das Verfahren wird am Beispiel eines
Versorgungsproblems vorgestellt: Patienten mit Entzündungen der ableitenden
Harnwege differenziert nach Alter und Geschlecht. Kontrollgruppe sind Patienten
ohne diese Diagnose. Mit Kenngrößen aus dem Vergleich von Ziel- und
Kontrollgruppe – der positiven Likelihood Ratio und der Breite ihres
Konfidenzintervalls – wird eine Clusteranalyse der Abrechnungsleistungen
durchgeführt. Die Cluster werden als partielle empirische Charakterisierung des
Zusammenhangs von Diagnosen als Morbiditätskriterium mit Leistungen als
Versorgungsindikatoren interpretiert.

Ergebnisse Das Verfahren eliminiert viele unspezifische, wenig
trennscharfe oder quantitativ bedeutungslose Leistungen. Der ermittelte Satz
diagnoseassoziierter Leistungen ist auf das jeweilige Versorgungsproblem
bezogen, bleibt vom Umfang überschaubar (22 bis 71 Leistungen je Gruppe) und
kann durch Variation der Grenzwerte der Kennziffern unterschiedlich eng mit der
Diagnose gekoppelt werden.

Schlussfolgerung Die vorgestellte Analyse fördert Leistungstransparenz und
kann die Weiterentwicklung des Abrechnungssystems mit seinen impliziten
Anreizstrukturen unterstützen. Cluster-Leistungen können Informationen zur
Entwicklung der assoziierten Morbidität beitragen.
Electron Acceptors Based on Cyclopentannulated Tetracenes
Authors: Plunkett Kyle , Kulkarni Gajanan , Morales-Cruz Jean , Hussain Waseem , Garvey Ian
Published: September 2018

New cyclopenta-fused polycyclic aromatic hydrocarbons (CP-PAHs) based on tetracene have been prepared by a palladium-catalyzed cyclopentannulation reaction. The new compounds have low-energy lowest unoccupied molecular orbitals (LUMOs) and relatively small band gaps. The photooxidative stability was intermediate to previously prepared CP-PAHs based on anthracene and pentacene as found in traditional acene stabilities. Scholl cyclodehydrogenation of pendant aryl groups led to materials that quickly formed endoperoxide products.
Hip Pain in Athletes: Part 1—How to Work Up, Diagnose, and Manage Core Muscle Injuries (Athletic Pubalgia)
Authors: Roedl Johannes , Zoga Adam , Meyers William , Poor Alexander
Published: September 2018

Lower abdominal and groin injuries are among the most common causes of pain in athletes. Those that involve the skeletal muscles of the core, defined as the entire body from the chest to the midthigh, are called core muscle injuries. In this review, the authors will describe the anatomy and pathophysiology of core muscle injuries in detail, as well as the appropriate work-up and management. Special consideration is given to the important interrelationship between core muscle injuries and intrinsic hip pathology, such as femoroacetabular impingement, and to the drawbacks of treating these injuries with platelet-rich plasma.
Diagnosis Discordance and Neonatal Transport: A Single-Center Retrospective Chart Review
Authors: Sampaio Tatiana , Wilson Margo , Aubertin Cheryl , Redpath Stephanie
Published: September 2018

Introduction In Canada, more than 4,000 critically ill newborns per year require transfer. Transports are initially managed based on information conveyed by referral practitioners.

Objectives To identify the frequency of diagnostic discordance between the referring facility, transport team, and tertiary care center in our outborn neonatal population and to verify the association between discordance events (DEs), prolonged transport stabilization times, and potential risk factors to further inform and facilitate the development of future outreach education initiatives.

Study Design In this retrospective chart review, we identified and categorized DEs for patients transported by our service in a 1-year period. Associations between DE, transport stabilization times, and patient variables were studied using univariate and multivariable approaches.

Results From 233 eligible patients, 10.7% of patients had referral to discharge discordance events. No significant association was identified between stabilization time and DE. Birth weight and presence of a neurologic diagnosis were associated with DE.

Conclusion Diagnostic discordance was identified in 1 of every 10 neonates transported and found to be associated with patients with higher birth weight and the presence of neurologic diagnoses. Outreach initiatives will be developed and adapted accordingly, with a focus on this population.
The schema mode model for personality disorders
Authors: Fassbinder E. , Schweiger U. , Jacob G. , Arntz A.
Published: September 2018

Schema therapy (ST) based on the schema mode approach is currently one of the major developments in the treatment of personality disorders (PD). ST is a transdiagnostic approach, but also provides disorder-specific models for most PDs. The mode model gives a clear structure for the development of an individual case conceptualization, in which all current symptoms and interpersonal problems of the patient and the connection with their biographical context can be accommodated. The therapeutic interventions are adapted to the present mode in the specific situation. In addition to cognitive and behavioral techniques there is a special focus on experiential techniques (especially chair dialogues and imagery rescripting) and on specific features of the therapeutic relationship (‘limited reparenting’). This paper provides an overview of the theoretical background and practical application of schema mode-based ST for PDs. An individual case conceptualization and the therapeutic techniques are illustrated with a case example of a patient with histrionic PD.
Psychotherapie narzisstisch gestörter Patienten
Authors: Lammers C.-H.
Published: September 2018

Dieser Artikel unternimmt den Versuch, die derzeit bestehenden psychotherapeutischen Konzepte zur Behandlung von narzisstisch gestörten Patienten schulenübergreifend zusammenzufassen. Im Rahmen einer Psychotherapie sollen u.a. die Einsicht des Patienten in seine doppelte Selbstwertregulation, die Reduktion von Schamgefühlen, ein verbesserter Um-gang mit bislang vermiedenen adaptiven Bedürfnissen und der Abbau von narzisstischen Verhaltensweisen zugunsten eines Aufbaus prosozialer und selbstwertdienlicher Verhaltensweisen erreicht werden. Hierzu bedarf es Strategien der therapeutischen Beziehungsgestaltung, der Arbeit an der doppelten Selbstwertregulation, einer Emotionsregulation mit Aktivierung adaptiver Bedürfnisse, der Korrektur dysfunktionaler Kognitionen, der Verbesserung der interaktionellen Fähigkeiten und ggf. Verbesserung der Leistungsfähigkeit des Patienten, um die Diskrepanz zwischen Anspruch und Erfolg zu verringern.
Nalmefen – Wirksamkeit und praktische Anwendung
Authors: Reimer J.
Published: September 2018

Nalmefen (Selincro®) bietet eine neue Therapieoption für die Behandlung von Erwachsenen mit Alkoholabhängigkeit, deren Alkoholkonsum sich auf einem mindestens hohen Risikoniveau (> 60 g reiner Alkohol/Tag für Männer, > 40 g reiner Alkohol/Tag für Frauen) befindet; hier unterstützt Nalmefen Erkrankte bei der Reduktion ihres Alkoholkonsums. Nalmefen besitzt ein eigenständiges Wirkprofil am Opioidrezeptor und kann nach Bedarf eingenommen werden. Innerhalb von 1–3 h nach Einnahme flutet der Wirkstoff an und kann das Alkoholverlangen abmildern. Unter einer Therapie mit Nalmefen ist sowohl eine Reduktion der schweren Trinktage als auch der konsumierten Gesamtalkoholmenge zu erwarten – insbesondere bei Patienten mit mindestens Hochrisikokonsum oder fehlgeschlagenen Versuchen, die Trinkmenge ohne pharmakologische Unterstützung zu reduzieren. Nalmefen ist sicher und im Regelfall gut verträglich, allerdings können Schwindel und Übelkeit therapielimitierend sein. In Behandlung und Gesprächsführung haben sich Elemente von Kurzinterventionen und motivierender Gesprächsführung bewährt.
Prädiktion der Alzheimer-Demenz
Authors: Jessen F.
Published: September 2018

Die Prädiktion der Alzheimer-Demenz ist die Voraussetzung für indizierte Demenz-Prävention. Zu unterscheiden ist die Prädiktion im hausärztlichen Versorgungsbereich, der gekennzeichnet ist durch eine niedrige Prävalenz der Erkrankung und einen begrenzten Einsatz von apparativen Verfahren sowie die biomarkerbasierte Prädiktion im Expertensetting (z.B. Gedächtnisambulanz). Im hausärztlichen Versorgungsbereich können anhand einfach zu erhebender Parameter Patienten mit erhöhtem Demenzrisiko identifiziert werden. Allerdings werden keine hohen positiven prädiktiven Werte (PPW) erreicht. In spezialisierten Einrichtungen können aufgrund der höheren Prävalenz der Alzheimer-Krankheit und dem Einsatz von Biomarkern (Liquor, Bildgebung) eine deutlich höhere Vorhersage der Demenz, insbesondere bei Personen mit leichter kognitiver Störung (mild cognitive impairment, MCI) erreicht werden. Eine sichere Prädiktion der Alzheimer-Demenz bei einzelnen Individuen ist aber aufgrund von grenzwertigen oder widersprüchlichen Biomarkerbefunden nicht immer möglich.
Design of triple-band-pass frequency selective structure based on spoof surface plasmon polariton
Authors: Wang Chao , Li Yongfeng , Han Yajuan , Feng Maochang , Wang Jiafu , Ma Hua , Zhang Jieqiu , Qu Shaobo
Published: September 2018

In this paper, a triple-band-pass frequency selective structure is designed by combining traditional frequency selective surfaces (FSSs) with the spoof surface plasmon polariton (SSPP) guiding structure array. The FSSs consist of Jerusalem cross unit cell array with dual-band-pass property. And the SSPP guiding structure array is composed of vertical metallic blade structure array with high-efficiency transmission by engineering the dispersion of SSPP. By arranging the FSSs above the SSPP guiding structure array, a null located between the two passbands is introduced, resulting in a triple-band-pass characteristic. Furthermore, the triple-band-pass frequency selective structure is simulated, fabricated and measured. Both the simulated and measured results agree well, and verify that the transmissivities are all higher than -0.5dB in three frequency ranges: 2.42-2.90GHz, 5.57-5.85GHz and 9.48-9.85GHz. And the transmissivities of stopbands are lower than -10dB in three frequency ranges: 3.12-5.46GHz, 6.65-7.89GHz and 10.32-15.20GHz.
Control of wireless power transfer to a bioelectronic device by harmonic feedback
Authors: Tian Xi , Lee Pui Mun , Ho John S.
Published: September 2018

We demonstrate control of wireless power transfer to an implanted bioelectronic device using harmonic feedback from the backscattered field. The feedback mechanism relies only on inherent nonlinearities in the receiver circuit and can provide a direct measurement of the extracted power without any modification of the device. We use the method to control an implanted light-emitting diode while varying the coupling between the source and receiver.