bluuebunny/crossref_metadata_2025 huggingface dataset:
Combination of a Coastal Vulnerability Index (CVI) and social economic approaches in prioritizing the development of Riau Coastlines, Indonesia
Authors: Sandhyavitri Ari , Fatnanta Ferry , Ramadhan Husaini Rizki , Suprayogi Imam
Published: March 2019

The length of Riau coastlines, Indonesia were approximately 900 km long. Hence, there has been difficulty in prioritizing managing various locations of the coastline damages based on a systematic approach. The objectives of this paper are to apply the state of art in the identification of 16 major coastlines vulnerability index in Riau, and to prioritizing which coastlines should be managed in terms of 4 main aspects such as; technical aspect, economic, environmental, and strategic one. The methodology applied in this paper utilized the combination of the Coastal Vulnerability Index (CVI) and social economic approaches using a Likert’s scale of 1 (low) to 5 (very high). This study has recommended a priority in managing the coastlines in Riau was as follow; Pambang Pesisir, Bengkalis and Tanah Merah, Meranti Islands. These coastlines were calculated as the very high level of vulnerability indexes of 75.3 and 74.9 respectively. This study also simulated the use of shoreline protection structure by Genesis software utilizing a revetment construction. The results showed that the construction of revetment structure in Pambang pesisir beach may reduce the shore erosion rate from 10 m/14 year to 0 m /14 year.
Identifying client project manager competency in Indonesian construction project
Authors: Puspa Negara Kartika , Lamari Fiona , Susilawati Connie , Trigunarsyah Bambang
Published: March 2019

The influence of active client involvement towards project construction success is gaining recognition in the last few decades. The growing concern on the client involvement has drifted the perception towards client away from the passive role into contributor of project success. During client involvement in the construction project, a representative from client or client project manager (CPM) should be complemented with certain competencies in order to succeed in commissioning construction projects. Evidence shows that some public construction projects in Indonesia failed due to the lack of competency of client project managers. Whilst most of the previous studies concern on the competency of general project managers, this paper specifically investigates competency of project manager from client side who works as a civil servant, and commissioning public construction sectors. This paper aims to identify the important competencies required by CPM in construction projects in Indonesia and examine current Indonesian CPM competency standard. Relative Importance Index (RII) was employed to assess the important level of competencies. The findings will enrich understanding on client project manager competency and become a basis to undergird further empirical research in client project manager development areas.
An analysis of building construction waste in Badung, Bali
Authors: Rai Widhiawati Ida Ayu , Yudha Astana I Nyoman , Ayu Indrayani Ni Luh
Published: March 2019

Various activities in construction will produce waste, as a solid, liquid waste, or gas. Construction waste defines as a large number of an unused material from the construction process, such as overplus, broken, faulty materials, and can not be used, which disrupts the project’s activities, financial losses, and environmental pollution. Handling the construction waste must involve all parties’ commitment, good management, and a good understanding of the problem causing factors. As yet, waste management within the construction industry has been widely investigated by researchers. This research aims to identify and analysis the important causes of building construction waste, and the frequent activities, manage this waste in Badung, Bali, Indonesia. Data were collected through questionnaire survey and interviews with fifty contractors who has been handling building in 2014 to 2018. An analysis used is statistical factor analysis with SPSS 17, and scoring methods. The findings revealed that important causative factor of construction waste such as lack of skill and knowledge of the workforce, poor material handling, inferior material quality, and unappropriate work methods. The most frequent activity performed in existing projects are strict and regular monitoring of workers, material handling procedure and clear storage, an accurate estimate material to avoid overplus, good handling storage and reachable, well organized material delivery time.
Evaluation of tsunami evacuation planning of the primary school student in Padang
Authors: Yosritzal  , Mustafa Kemal Badrul , Syafwan Mahdhivan , Junaidi  , Putra Hasdi , Rina Dewi Patra , Aksellia Ika
Published: March 2019

This paper presents an evaluation of the tsunami evacuation of elementary school children in Padang. The objective of the study is to evaluate the evacuation planning using an observation data from an evacuation Experiment initiated by the Padang Regional Disaster Management Agency (BPBD Padang). In this study, the chosen evacuation destination was evaluated based on the available evacuation time, the evacuation methods, walking speed of the students in a group and the provided tools in the classroom for evacuation as in the guidelines of tsunami evacuation for schools in Hawaii.
Evaluating social infrastructure financial feasibility with life cycle costing methods
Authors: Hagni Puspito Imam , Perwitasari Dian , Munaf Ferry , Sjafrecia Petroceany Jade , Zetha Rahman Herawati , Andreas Azaria
Published: March 2019

Social infrastructure is defining as a physical facility that has been build for local community provided by government, private, or even from other institution. Social infrastructure dedicated to a function of place, for a particular group of people or those with special needs. The social infrastructure concept that will be discussed in this research is Road Side Station, adopted from Japanesse Michinoeki. Similar with michinoeki, the road side station is predefined to organize service functions to road users, economic empowerment of local community, and part of incubation service for its surrounding area. Diffrent from highway’s rest area that located at highway (toll road), the road side station will be located at nation road’s side. In 2016, the Ministry of Public Works dan Housing developing a pilot project of road side station located in Tugu, Trenggalek District, East Java Province. According to that, this research is aim to analyze a model for evaluating social infrastructure financial feasibility, based on case study in Tugu’s Road Side Station. This research used quantitative approach and then the Life Cycle Costing (LCC) methods will analyze and evaluate the financial modelling from construction phase to operating. With LCC methods, the percentage of Operation and Maintenance Cost (OM Cost) from all of the Capital Expenditure Cost (CAPEX Cost) can be calculate. Finally, the result shows that developing and operating Tugu’s road side station through out its life cycle is financially feasible, according to the LCC analyze.
Investigating the risky behavior of international tourists riding motorcycles in Bali
Authors: Made Priyantha Wedagama Dewa , Wishart Darren
Published: March 2019

Motorcycle accidents and injuries in Bali have been highly occurred as to a cause of their predominance in urban transportation structures. While riding a motorcycle, a tourist eventually is obligated to his/ her own particular safety. Road safety analysts are concerned with accident risk faced by tourists because of a great possibility to be associated with a road accident while on vacation. This research investigated motorcycle riding behaviors and combined with a scope of psychosocial factors for example, sensation seeking, risky riding intentions and attitudes using international tourists riding motorcycles whilst on vacation in Bali as the respondents. Two models are constructed comprising of Principal Component Analysis (PCA) and Structural Equation Model (SEM). Predictors employed socio-demographic variables consisting exposure and years licensed, gender, age, education levels, and estimates of distance travelled. International tourists revealed a scope of purposes behind riding motorcycles in Bali, for example, for fun and feelings of freedom. This research discovered that male international tourists with sensation seeking will probably be taking part in traffic and speeding infringement in contrast with females. These study outcomes alongside the suggestions for tourists training and road safety campaign while on holiday in Bali are examined.
Determination of the priority for arterial and collector road handling in Solok city, West Sumatra province
Authors: Martanto Adji Bayu , Ophiyandri Taufika , Anita Meyadtri , Angelia Nike
Published: March 2019

When handling roads, there should not be any roads that are neglected. Due to the limitation of funds, among the roads that have to be maintained, it is not necessarily possible to handle all of them with the same priority. It is necessary to prioritise road handling by considering the conditions and factors that influence its use. Roads that are used more often will be prioritised when it comes to maintenance. The data used in this study consisted of secondary and primary data. The secondary data was obtained from the Public Works Office of Solok City (Database of Solok City Roads, 2017) and Bappeda (RPJMD and RTRW). 8 segments of road were observed. Traffic volume surveys were conducted for 2 x 24 hours. Furthermore, questionnaires were distributed to support the secondary data, and 30 respondents answered. Six criteria were considered: Condition Factors (A), Traffic Volume Factors (B), Economic Factors (C), Policy Factors (D) Land Use Factors (E), and Side Building Factors and Road Complement (F). This study used the Analytic Hierarchy Process (AHP) method developed by Thomas L. Saaty. This method will simplify the complex multi-criteria problem into a priority scale hierarchy. The results of the AHP method analysis were included in a mathematical model as according to Brojonegoro (1991).The results showed that the priority for routine road maintenance was “Traffic Light Pandan - Tanjung Paku” road section (033), the priority for periodic road maintenance was “SMP 1 Simpang Damar” road section (047) and the priority for road improvement in general was “Simpang Sigege - Ampang Kualo” road section (051).a
Efforts to preserve the sustainability of subak irrigation system in Denpasar city, Bali Province, Indonesia
Authors: Norken I Nyoman
Published: March 2019

Subak as an irrigation system in Bali is estimated to have existed before the IX century and up to now subak has consistently maintained the continuity of traditional irrigation management and operation of the irrigation system. Subak is a socio-agrarian and religious based on the philosophy of Tri Hita Karana rooted in Hindu philosophy. The challenge of subak in general is that the shrinking of the subak area, the farmers are unable to achieve a decent living, the age of the farmers is over 40 years, the financial burden that farmers bear in doing subak activities is very heavy. The condition is also very much felt in the city of Denpasar as the capital of the province of Bali. The Government has determined to preserve subak as a cultural heritage to realize Denpasar as a Heritage City. The conservation effort is carried out through: maintaining the subak area through local regulations as green open space (RTHK), providing various assistance such as: exempting subak areas from taxes and providing insurance assistance in case of crop failure, assistance for ritual implementation, irrigation channel repair assistance, production facilities, agricultural equipment assistance, incentives for subak managers, providing assistance in realizing subak as ecotourism, plan to provide scholarships for the children of subak farmers.
Assessment of shallow groundwater on the bank of the ISTN lake through lakebank filtration based on aquifer properties, pH, total dissolved solids (TDS), and microbiological analysis
Authors: Syafalni Syafalni , Kuswaya Wawan , Marsiano Wahyudi , Zulkafli Dian
Published: March 2019

A lakebank filtration assessment was carried out on the shallow groundwater surrounding the ISTN lake to evaluate of the shallow groundwater resources in the area. The objective of this research is to describe the shallow groundwater characteristics based on aquifer properties, pH, TDS and microbiological analysis. This research was conducted by making boreholes and observation holes at the bank of the ISTN area for 3 points in a single line perpendicular to the Lakebank together with 3 points in a single line perpendicular to the canalbank for doing the experiments and taking samples for pH, TDS, and microbiology analysis. Based on aquifer properties using boring and pumping test results, the aquifer layer with a thikness around 4 m show the normal storage coefficients between 0.00026 and 0.0316. From the pH, TDS, and microbiological analysis for sampling taken from boring 2.1, 2.2., and 2.3 with the distance around 10, 20, 30 m from the lake boundary were found in range of fresh water with zero patogent microbial population but the pH of some samples was lower than the pH of drinking water requirement in which that should be improved by using simple treatment before consumption.
Rainwater harvesting system for a sustainable water supply for the poor on Merbau island
Authors: Joleha  , Mulyadi Aras , Wawan  , Suprayogi Imam
Published: March 2019

Difficulty in meeting one’s basic daily needs such as clean water in order to fulfill a healthy, clean and productive life is a significant problem for people living on remote islands. Rainwater is the only source of clean water for the community on Merbau Island because of the low quality of the surface and groundwater resources. The majority of Merbau Island is covered by peat and lowlands; hence the rainwater that falls on the land surface is generally contaminated with peat water, which tends to be more acidic. Frequent rainfall at the location produces an abundant volume of water that is sufficient enough to meet the collective household daily demand for clean water. However, the community is not able to provide a large rainwater harvesting facility that can minimize the loss of rainwater into the rivers or seas. This study aimed to obtain data on the field conditions used as the basis for planning RWH systems for domestic needs so as to meet the need for sustainable clean water on Merbau Island. The results show that the highest rainfall recorded in 2013 was 3,164.3 mm. Such an amount of rainwater can fulfill the daily clean water requirements for each household on Merbau Island. The population of poor people on the island is approximately 44%, which results in around 73% of people not having an adequate rainwater harvesting system. The average roof area data, the number of family members and the type of roof, being 213 m2, 6 people and zinc (0.9) respectively, using the Rain Cycle v2 software, obtained the result that a 12 m2 tank is needed to meet the need for clean water throughout the year.
Application of Hybrid-Ihacres models for water availability in Siak River
Authors: Fauzi Manyuk , Ermiyati  , Suprasman  , Siswanto  , Malik Alfian , Ananta Putra Doli , Putra Andica
Published: March 2019

Watershed management with potential water resources greater than or equal to 20% of the potential of water resources in the province requires a device capable of addressing those needs. The Siak river area is a potential source of water resources greater than 20%. Until now, the Siak river area does not yet have an integrated water resource information system; thus information on the potency of water absorption cannot be adequately recorded. Prediction of water availability in watersheds has significance for the management of a watershed. The research aims to develop a hydrological model to strengthen the water availability information to complete the water availability information. The built model is a combination of a conceptual model with wavelet (hybrid model) that is wavelet-ihacres. The wavelet transform method has the advantage of decomposing and reconstructing the data to produce better predictions. The results showed that the combined wavelet-ihacres have a coefficient correlation between observation data and output model of 0.737. The value is classified as a strong correlation.
Wave pattern simulation around the breakwater configuration in Bantan coast, Bengkalis
Authors: Sujatmoko Bambang , Fauzi Manyuk , Ananta Putra Doli
Published: March 2019

Bantan Coast in Bengkalis Island that suffered worst abrasion due to wave attack. Protection of abrasion area against the wave can be done by proper lay-out of breakwater with certain configuration. To get the optimal configuration of breakwater, wave pattern around the breakwater were analyzed quantitatively. It was conducted to obtain the optimum condition of wave height reduction produced. Evaluation of breakwater lay-out effect to wave pattern can be done by numerical model approached. Wave pattern simulation that occurred due to the breakwater was done by Surface water Modelling System (SMS) - CGWAVE software module. This module is a 2-D depth average numerical model using finite element model. To get accurate simulation, a deviation of the numerical result and the measurement result at several locations was used as the indicator parameter in the calibration process. The results showed that from the result of calibration process was used 1.3 meters wave height and 5.4 seconds wave period. Three breakwaters 20 meters slit configuration produced a maximum value of wave height reduction and wave velocity reduction (in comparison wave simulation without breakwater). This configuration produces 60% height reduction and 14% velocity reduction.
Jambi and Palembang clay soil stabilization for pavement matrix in road construction by using Portland cement type I
Authors: Kuswaya Wawan , Marsiano Wahyudi , Syafalni Syafalni , Jonbi
Published: March 2019

The need for a pavement matrix in road construction, especially in Sumatra area, is now more difficult and expensive because the deposit materials are concentrated in Java and most of them are not available. For this reason, soil stabilization is a way out of this problem. On this basis it is necessary to conduct stabilization research with highly active stabilization material by using Portland cement type I. The soil to be stabilized is clay soil which is derived from the areas of Jambi and Palembang and which has a low CBR value less than the requirement for sub base or pavement (< 10%), with the expected CBR value of stabilization to be suitable for road construction. This research covers physical and soil mechanical properties which are compaction parameter and CBR value with 3 days of dry curing time and 4 days of soak curing time using ASTM test procedure. Variations of cement addition were used of 6%, 8%, and 10% for the clay soil from Palembang and 8%, 10%, and 12% for the clay soil from Jambi, by percentage of dry weight of the sample test. The results of this study showed that the CBR value significantly increased with the addition of cement, with Palembang soil CBR value rising from 3.46% to 130.74% and Jambi soil CBR value rising from 7.20% to 206.43% respectively.
Experiments determining the height of the pressure and the time required to clean the water purification filter
Authors: Saparuddin Saparuddin , Pitanda Eisenring Maryo
Published: March 2019

The water treatment process to get water that meets the requirements of drinking water is carried out using sand filters as the main ingredients in addition to gravel, charcoal, and fiber. This water treatment can effectively produce drinking water that is needed, the use of a filter for a long time will cause blockage by dirt stuck on the surface of the sand filter, so it cannot be used continuously without being cleaned regularly. This study aims to determine the water pressure needed to clean the dirt that clogs the sand filter and the length of the filter washing cycle. Using laboratory experiments on a J-shaped filter container model of cross-section plastic pipe 07.5 cm, 010 cm, 015 cm, and 020 cm filled with sand grading 0.15 to 0.6 mm as thick as 50-60 cm, channeling pressurized water through the outlet into the sand filter and out through the overflow pipe. The results showed that a water level of 200 cm above the datum was able to push dirt and clean the filter after being pressed for 600 seconds.
Assessment of reuse, recycle, and recoverable potential of solid waste
Authors: Dawit Meseret , Hailu Habtamu , Feyisa Arbo
Published: March 2019

A study was conducted to assess the reuse, recycle, and recoverable potential of Municipal Solid Waste (MSW). Generation rate, waste type, and physicochemical analysis of MSW were evaluated. Results of MSW analysis indicated that the total amount of MSW generation rate per day at Haramaya University (HU) is estimated to be 2608.56 kg/day. The per capita solid waste generation rate is estimated to be 0.134 kg/cap/day. The three waste categories that contributed the greatest proportion of the total sorted waste at all sources are compostable organic matter (57.31%), papers (16.26%), and fines (10.98%) respectively. These three waste categories accounted for approximately 84.55% of the total waste sorted. The remaining 15.45% of the sorted waste were plastic material (5.82%), miscellaneous (4.45%), cardboards (2.37%), metals (1.30%), glass (0.87%), and textiles (0.63%). The particle size distribution of compostable organic matter is 42.76% (greater than 50 mm), 53.2% (between 10-50 mm), and 4.04% (less than 10 mm). The result shows that a large proportion of compostable organic waste is found in the particle size range of 10-50 mm. The physicochemical composition of selected compostable organic waste was compared with standard values suitable for the composting process. The study further revealed that there has been a generation rate of potentially recyclable were 169.45 tonnes/year papers and carton, 59.49 tonnes/year plastic material, and 11.82 tonnes/year metals (can). These materials should be collected separately (source separation) and can also be a means of income generation to the institute.
Stabilization/Solidification of used lubricating oil containing Fe and Pb with Portland cement and bentonite
Authors: Nindyapuspa Ayu , Alfiah Taty , Indrawan Toda Virgo
Published: March 2019

Used lubricating oil belong hazardous waste based on the Government Regulation Number 101 in 2014 about Hazardous Waste Management. Used lubricating oil contain hydrocarbon and heavy metals such as Fe and Pb. One of method to immobilize used lubricating oil is stabilization/solidification (S/S). S/S method always uses Portland cement to immobilize the heavy metals, but Portland cement can not immobilize the hydrocarbon. In this research, S/S method used Portland cement and bentonite are binding the heavy metals and hydrocarbon in the used lubricating oil. The composition used was cement bentonite 25:75, cement bentonite 75:25, cement 100%, and bentonite 100%. Used lubricating oil was added in 5%, 10%, and 15% weights. The S/S products were examined by measuring the TCLP of the Fe and Pb. The TCLP test was compared with the Fe and Pb concentration in the used lubricating oil. The results showed that the TCLP test of the Fe on the S/S product containing 5%, 10%, 15% used lubricating oil with cement 100% was 371.14 mg/L, 403.66 mg/L, and 417.89 mg/L respectively. Meanwhile, the Fe concentration in the used lubricating oil was 47.78 mg/L. The adding of bentonite to the S/S product decreased the Fe concentration that was leached. The TCLP test of the Fe in the S/S products that contained 5%, 10%, and 15% used lubricating oil with bentonite 100% were 15.24 mg/L, 0.085 mg/L, and 0.428 mg/L respectively. The S/S method using Portland cement and bentonite decreased the Pb concentration leached into the environment.
Preparation of alkali-activated fly ash-based geopolymer and their application in the adsorption of copper (II) and zinc (II) ions
Authors: Darmayanti Lita , Notodarmojo Suprihanto , Damanhuri Enri , Kadja Grandprix T. M. , R Mukti Rino
Published: March 2019

Alkali activation of fly ash can a promising alternative of the system to improve adsorption capability of fly ash. In finding the best chemical composition of the activator solution, geopolymer has been synthesized using molar ratios of Na2O/SiO2 0.16, 0.3, and 0.5 (Gr1, Gr3, Gr5). The results indicated that the geopolymer synthesized with a ratio molar of Na2O/SiO2 0.3 (Gr3) improved the adsorption properties of fly ash substantially. Gr3 was characterized by BET, XRD, and FTIR. The batch experiment was conducted at the different duration and initial concentrations. The equilibrium sorption data were fitted for the Langmuir and Freundlich equations. The maximum sorption capacities calculated from Langmuir isotherm was 54 mg g-1 and 47 mg g-1 for Cu (II) and Zn (II) respectively. The kinetic data reveal that the pseudo-second order model was appropriate for a description of the kinetic performance.
The synthesis of magnetic nanoparticles from naturaliron sand of Kata beach Pariaman West Sumatera using ball milling method as environmental material
Authors: Amiruddin Erwin , Prayitno Adhy
Published: March 2019

Synthesis, magnetic, and structural properties and adsorption study of magnetic particles of Fe3O4have been carried out. Magnetic particles were synthesized from natural iron sand of Kata Beach Pariaman West Sumatera using ball milling method. The structural properties of the samples were determined using X-Ray Diffractometer (XRD) technique. Magnetic properties such as magnetization were measured based on hysteresis loop using vibrating sample magnetometer (VSM). Mass susceptibility of the sample was measured using Pasco magnetic probe. It was found that the mass susceptibility of magnetic particles increased significantly as ball milling time increased. Based on VSM results, the magnetic particle of Fe3O4has magnetization value of 32.26 emu/g with small coercivity of 174 Oe. Moreover, the results showed that ball milling method has succeeded to obtain magnetic particles. The increase of ball milling time resulted in an increase of magnetic moment of the sample. In this research, the magnetic particle of Fe3O4 was added to a solution of methyline blue performed using shaker method. Atomic Adsorption Spectroscopy (AAS) method was used to study the methylene blue degradation.
Biogas production from household solid waste-an alternative solid waste treatment for a communal scale
Authors: Raharjo Slamet , Komala Puti S. , Pratoto Adjar
Published: March 2019

Current practice in Indonesia shows that Household Solid Waste (HSW) is handled by transferring to landfill site. Meanwhile, around 68% of HSW is composed of biodegradable components, which has potential for biogas production. The current study compares some commercial activators including Green Phosko (GP7) and Effective microorganisms 4 (EM4) with homemade activator in 200 L anaerobic digester equipped with manual mixing for processing kitchen waste (KW). pH and ratio of solid waste to water were set at 8 and 1:2, respectively. Batch experiments show that digester #3 with homemade activator shows superior performance compared to commercial activators. Meanwhile, the digesters with commercial activators show better performance compared to digester control (without activator). Digester #3 produces 1.35 L CH4/kg total solid (TS) and 1.14 L CH4/kg volatile solid (VS). Current work suggests that the homemade activator has the most suitable methanogen bacterium compared to the commercial activators.
Analysis of soil effects as leachate filter: A case study of TPA Mandung Tabanan
Authors: Diana Harmayani Kadek , Ari Budiman I Nyoman , Karunia Putri Luh Putu M.
Published: March 2019

The accumulation in large volume of solid waste in the area of TPA Mandung is creating a new serious problem since the leachate is extremely increasing. The spill drastically contaminates the groundwater and the surrounding environment because the wastewater treatment plant isn’t working on full capacity. Based on those facts, it is necessary to start researching on how the leachate influences the soil characteristics, and how to get the soil to provide a proper filtration. The samples of soil and the leachate from TPA Mandung have, at first, been collected; soil properties have been physically and mechanically tested, while the leachate characteristics have been determined from the parameters of the contained substances. The leachate filtration was performed simultaneously with a hydraulic conductivity test simply varying its height from 7 cm, 9 cm, and 11 cm. The water drained from the hydraulic conductivity test has been reexamined to determine the changes in the leachate parameters after passing through the soil. The K value (hydraulic conductivity coefficient) in the soil hydraulic conductivity test sampled with height 11 cm, 9 cm, 7 cm, were respectively 0.000050 cm/sec, 0.000062 cm/sec, and 0.000065 cm/sec. The results showed a decrease in the coefficient of hydraulic conductivity along with the addition of leachate and the variation in sample height. The leachate in TPA Mandung before and after filtration had COD, BOD5, TSS, TDS and oil levels that exceeded the permitted threshold according to Regulation of Minister of Environment No. 5 of2014 concerning Wastewater Quality Standard.
Simultaneous pollutant removal and PHB accumulation in simple anaerobic treatment of oily wastewater
Authors: Primasari Budhi , Koh Wei Tong
Published: March 2019

Oil and grease is one of the complicated pollutants to be removed due to oil-in-water emulsions content. This research is a treatment of oily wastewater from an edible oil factory. Addition to pollutant removal, accumulation of PHB (Polyhydroxybutyrate) is investigated simultaneously. Objectives of this research are to obtain the optimum operating conditions for removal of COD and oil, grease, and accumulation of PHB. Operating parameters are acclimatization period (3-7 days), pH (6-8) and sludge concentration (25-75%). Anaerobic treatment was conducted in a bottle and put on a shaker. The wastewater from the edible oil factory was fed to reactors as the substrate and the sludge was added. The result shows that this treatment removed 59.4-90.4% of COD and 65.3-85.2% of oil and grease. Overall PHB accumulation was 0.67-6.00% of PHB/VSS, which is much lower than the pure culture. The influence of pH (6-8) is less significant to both pollutant removal and PHB accumulation. The COD removal efficiency increased with the period of acclimatization and 5 days of acclimatization shows the highest yield of PHB. 50% sludge concentration shows the highest yield of PHB, which is 6.0% PHB/VSS.
Bénéfices du travail pour les personnes présentant un vécu psychotique
Authors: Martin Brice
Published: March 2019

Nous proposons de revenir dans cet article sur quelques enjeux du travail dans le contexte des troubles psychotiques, en nous tournant plus particulièrement sur la question des bénéficies du travail.

Nous questionnerons en premier lieu le rôle crucial que peut être amener à jouer l’activité professionnelle dans la relance du processus de « quotidianisation », souvent altéré dans les troubles psycahotiques.

Nous reviendrons par ailleurs sur d’autres bénéfices potentiel du travail et notamment son rôle de médiation sur le plan relationnel ainsi que sa fonction d’ancrage dans la réalité.
The Non-profit Sector in Russia in the Global Economy View
Authors: Ivanova N.I.
Published: March 2019

The non-profit sector is growing and expanding worldwide. In Russia it is still underdeveloped due to the reasons revealed in the paper. Non-profit organizations (NPOs) have particular features in each country (starting with their legal definition ending with their size and global ambitions). So they do in Russia. These specific traits have been summarized, reasoned and explained using the qualitative approach and inductive interpretivism. This will help to fill the gap in literature on NPOs in Russia and surely prove that the non-profit sector does exist in Russia and keeps developing. The revealed features may as well help to adopt in Russia the foreign experience of developing the non-profit sector. The results obtained can further scientific research on NPOs in Russia and help the government to provide the sector with specific and adequate support.
Statistical Analysis of House Construction Capacity Dynamics in ex-USSR Countries
Authors: Tsypin A.P. , Persteneva N.P. , Bannikov S.A. , Lebedeva T.V.
Published: March 2019

The relevance of the article is explained by the necessity of building more precise forecasts of developing socio-economic phenomena characterizing complex dynamics. The goal lies in analyzing the dynamics of launching of residential units in the post-Soviet countries and building a forecast with the account of the retrospective path movement of the indicator. The appliance of the “changing the growth (fall)” econometric model in the studied time-series has allowed to predict in a more precise way their path movement. The significance of the obtained results both for econometrics and residential property market economy are apparent and lie in mastering the methodology of building complex socio-economic phenomena, among which is the launching of residential units in the post-Soviet countries.
Estimation of the Efficiency of Working Time Usage as a Factor of Sustainable Increase of Labor Productivity
Authors: Bogatyreva I.V. , Ilyukhina L.A. , Simonova M.V. , Kozhukhova N.V.
Published: March 2019

The article views rationalization of working time as the most important factor of the labor productivity of personnel. Rationalization of working time is aimed at reducing losses and unproductive costs caused by deficiencies in the system of production support, its management and organization. Improving the use of working time, it is possible to increase productivity of labor very quickly without attracting additional funding. This stipulates the relevance of the study of the issues of efficient use of working time and reducing its losses and unproductive costs. The objectives of the study, the results of which are reflected in this article, were the analysis of the problems connected with inefficient use of working time at Russian enterprises and the search for ways to solve them as well as the development of an algorithm for calculating and evaluating working time efficiency. The authors of the article justified the procedure for evaluating the efficiency of working time, analyzed the structure of work at the preparatory and final stage and the time of workplace maintenance, the composition of losses and unproductive use of working time. Calculating of the possible increase of labor productivity due to better use of working time on the example of one of Samara enterprises is given. A flowchart of the analysis of working time efficiency and the assessment of reserves for labor productivity increase are presented; the main directions of improving the use of working time at enterprises are given, taking into account the reasons of its losses and unproductive costs.
The Stimulation Model for the Criterial Decision-Making at the Agricultural Enterprise
Authors: Shepel V.N. , Speshilova N.V. , Kitaeva М.V.
Published: March 2019

According to the general theory of systems, agricultural enterprises are from the category of closed systems in interaction with the external environment and they are close to the category of open systems. The decision maker (DM) needs to have information about the current state of the external environment with statistical analysis of the level achieved and forecasts for the future. Therefore, the task of improving the methods substantiating managerial decisions, using the criterion approach with simulation modeling of agricultural enterprises, is relevant. In the course of building the required model, three subtasks were solved: a conceptual model was built, which was transformed into a machine model, calculations were carried out, and the results were interpreted. Simulation modeling of the agricultural enterprise using a computer should study the performance of the agricultural enterprise before it is designed, at the stage of its setting up and in the course of its operation.
Urban Forests of Samara-Togliatti Agglomeration: Land Use and Protection Issues
Authors: Kondolskaya A.A. , Vasilieva D.I.
Published: March 2019

The territories of urban agglomerations are most susceptible to anthropogenic impact. At the same time, the area of urban forests of the Samara-Tolyatti agglomeration (further referred to as STA) has significantly decreased in recent years. A pressing issue is the preservation of the remaining forests in the cities of the agglomeration. The purpose of the study is to compile a balance of urban STA forests, as well as an analysis of the legal regime for their use and identification of violations in this area. The main research method is the analysis and synthesis of available materials. The result of the study is to identify problems in the use and protection of urban land.
ZNS-Infektionen bei Immunsupprimierten
Authors: Weidauer Stefan , Hattingen Elke
Published: March 2019

Bei Immuninkompetenz ist das Erregerspektrum verändert und erweitert. Erreger, die bei Immunkompetenten keine Infektion auslösen können, müssen je nach Art der beeinträchtigten Immunabwehr berücksichtigt werden. Dementsprechend sind auch die Befunde in der zerebralen Bildgebung und in der Labor- und Liquordiagnostik verändert.
Prognose stellen nach Schlaganfall – Erholung vorhersagen
Authors: Henneken Tina
Published: March 2019

Wird der Arm wieder so wie vorher? Mithilfe des Algorithmus „Predicting Recovery Potential“ ist es möglich, schon in den ersten drei Tagen nach dem Schlaganfall eine Prognose zur Erholung der oberen Extremität nach zwölf Wochen abzugeben. Das hilft Physiotherapeuten und Patienten, die Therapie zielführend zu gestalten.
Eine Reise durch die neurologische Rehabilitation: die
letzten 20 und die nächsten 30 Jahre
Authors: Wade Derick T.
Published: March 2019

Die Geschichte kann durchaus die Zukunft erklären helfen. Ein kurzer Rückblick
auf die bedeutende Entwicklung in der Neurologie zeigt, dass Neurologen eher per
Zufall bereits auf dem Weg zu einer stärkeren Beteiligung an der neurologischen
Rehabilitation sind.
Exploring Obstetrical Interventions and Stratified Cesarean Section Rates Using the Robson Classification in Tertiary Care Hospitals in the United Arab Emirates
Authors: Abdulrahman Mahera , Abdullah Sara Saad , Alaani Aminah Fuad Khalil , AlAbdool Noora Hassan , Sherif Fatma Elzahraa Yehia , Ahmed Zainab SalahEldin , Al-Rawi Hiba Issa , Hubaishi Nawal Mahmood , Tahlak Muna AbdulRazzaq , Carrick Frederick R
Published: March 2019

Objective The objective of the present study was to explore obstetric management in relation to clinical, maternal and child health outcomes by using the Robson classification system.

Methods Data was collected from obstetrics registries in tertiary care hospitals in Dubai, United Arab Emirates (UAE).

Results The analysis of > 5,400 deliveries (60% of all the deliveries in 2016) in major maternity hospitals in Dubai showed that groups 5, 8 and 9 of Robson’s classification were the largest contributors to the overall cesarean section (CS) rate and accounted for 30% of the total CS rate. The results indicate that labor was spontaneous in 2,221 (45%) of the women and was augmented or induced in almost 1,634 cases (33%). The birth indication rate was of 64% for normal vaginal delivery, of 24% for emergency CS, and of 9% for elective CS. The rate of vaginal birth after cesarean was 261 (6%), the rate of external cephalic version was 28 (0.7%), and the rate of induction was 1,168 (21.4%). The prevalence of the overall Cesarean section was 33%; with majority (53.5%) of it being repeated Cesarean section.

Conclusion The CS rate in the United Arab Emirates (UAE) is higher than the global average rate and than the average rate in Asia, which highlights the need for more education of pregnant women and of their physicians in order to promote vaginal birth. A proper planning is needed to reduce the number of CSs in nulliparous women in order to prevent repeated CSs in the future. Monitoring both CS rates and outcomes is essential to ensure that policies, practices, and actions for the optimization of the utilization of CS lead to improved maternal and infant outcomes.
Custom Cementless Femoral Stems in Total Hip Arthroplasty
Authors: Wera Glenn D. , Dwyer Mark W. , Verhotz Daniel R. , Popa Matthew A. , Marcus Randall E.
Published: March 2019

Obtaining appropriate prosthetic fit in cementless total hip arthroplasty can be challenging in cases with disparity between the femoral and metaphyseal diameters of the femur or cases of complex deformity. One solution has been to utilize a custom femoral component in total hip arthroplasty. The long-term results of this option with respect to femoral morphology are limited. This cohort was analyzed to determine the survivorship, functional results using Harris Hip Scores (HHSs), and complication rates using these implants. Survivorship and complications were evaluated based on the proximal femoral anatomy and severity of arthritis. The authors retrospectively reviewed 73 cases of custom femoral implants in total hip arthroplasties by a single surgeon. The average age of patients at index surgery was 58.06 years (range, 36.00–73.75 years). The mean follow-up was 8.59 years (range, 0.17–20.33 years) with a minimum of 2-year follow-up required for analysis of HHS data. There were 8 failures at a mean of 67.68 months (range, 2.04–135 months). The reasons for revision were infection (2), osteolysis (1), periprosthetic fracture (3), osteolysis and aseptic loosening (1), and polyethylene wear (1). The mean preoperative HHS was 55.38 (range, 31–90). The mean follow-up HHS was 93.10 (range, 38–100) with a mean improvement of 37.44 (p < 0.0001). Complications included infection (3), fracture (6), and dislocation (3). Preoperative Dorr classification A (n = 44), B (n = 24), and C (n = 1) and Kellgren–Lawrence grades I (n = 0), II (n = 2), III (n = 7), and IV (n = 60) were not predictive of failure or revision (p = 0.45, p = 0.6). There was a near significant association between Dorr classification B femur fractures requiring revision (p < 0.053). Kaplan–Meier predicted survivorship was 20.33 years with revision for any reason as the endpoint and total overall survivorship of 81.7%. Custom cementless femoral stems provide satisfactory survivorship and improvement in hip scores in a variety of patients undergoing cementless total hip arthroplasty. Fracture rates are higher in Dorr class B femurs. The level of evidence was IV.
Artrodesis total de muñeca en paciente con síndrome de Hajdu Cheney – reporte de caso
Authors: Azócar Sanhueza Camila , Naranjo Reyes Marco , González García Javier , Carrasco Penna Gabriel
Published: March 2019

El síndrome de Hajdu-Cheney, es una patología infrecuente caracterizada por alteraciones esqueléticas que se manifiestan con acro-osteolisis y osteoporosis generalizada. Su frecuencia es extremadamente rara y existen escasos reportes en la literatura a nivel mundial. Se presenta un caso de un paciente con colapso avanzado del carpo producto de una no unión de escafoides no tratada. Se describen características clínicas y radiográficas del paciente y la resolución del caso con artrodesis total de muñeca.
Investigation of structural and magnetic properties of PrIr3B2 single crystal
Authors: Manni S. , Thamizhavel A. , Dhar S. K.
Published: March 2019

We report the growth of a single crystal of PrIr3B2 by Czochralski pulling method and its structural and anisotropic magnetic properties. At room temperature, PrIr3B2 crystallizes in the hexagonal CeCo3B2-type (P6/mmm) structure. However, a change of crystal symmetry is indicated by a hysteretic transition observed in both the resistivity and heat capacity taking place at ≈ 280 K, which is similar to the observed transition from monoclinic (at room temperature) to hexagonal at 395 K previously reported in CeIr3B2 in literature. The jump in the heat capacity at the transition during cooling is nearly 400 J/mol K. The Curie-Weiss behavior of susceptibility conforms to a trivalent state of the Pr ions, which order antiferromagnetically or ferrimagnetically, as inferred from a relatively broad peak in the susceptibility centered around 10 K. The bulk magnetic transition is further corroborated by an anomaly in the heat capacity at low temperatures. Both the temperature dependence of magnetization, and the isothermal magnetization at 2 K reveal a highly anisotropic magnetic behavior in PrIr3B2 with c-axis [0001] as the hard direction of magnetization. The electrical resistivity shows normal metallic behavior down to TN, below which it shows an upturn suggesting the onset of superzone gap.
On-chip dynamic time reversal of light in a coupled-cavity system
Authors: Konoike R. , Asano T. , Noda S.
Published: March 2019

We theoretically and experimentally demonstrate dynamic, all-linear time-reversal of infrared light in planar optical circuits for the first time. We propose that the oscillatory motion of the light stored in cavities can be time-reversed by fast nonadiabatic tuning of the frequency of eigenmodes of a coupled cavity system and experimentally demonstrate it using a system consisting of distant high-Q-factor two-dimensional photonic crystal cavities between which effective direct couplings are formed via line-defect waveguides. We also analyze the loss and methods to reduce the loss, as well as a theory that expands our system to realize general time-reversal operation for any input light.
Optical properties of single crystalline copper iodide with native defects: Experimental and density functional theoretical investigation
Authors: Koyasu Satoshi , Umezawa Naoto , Yamaguchi Akira , Miyauchi Masahiro
Published: March 2019

Copper iodide (CuI) is an attractive transparent p-type semiconductor, and we investigated the relationship between the optical property and native defects in CuI using experimental and theoretical studies. To exclude neither surface impurity nor interface strain, we used well-defined CuI single crystals with native defects, i.e., Cu-rich CuI and I-rich CuI, as well as highly pure CuI, which were prepared by post-annealing treatment of the CuI single crystal under controlled atmosphere. The optical absorption and photoluminescence (PL) properties of these samples were then carefully evaluated. Consequently, two absorption signals (AB1: 2.9 eV, AB2: 2.7 eV) and two PL peaks (PL1: 2.9 eV, PL2: 1.8 eV) were observed. The AB1, AB2, and PL1 signals were obvious under I-rich conditions, whereas the PL2 signal was dominant in the Cu-rich sample. To discuss the origin of these absorption and PL signals, we calculated the absorption and emission energies of defects in CuI using the density function theory (DFT). As a result, AB1 and PL1 are assigned to the transition and recombination between copper vacancy (VCu) and conduction band, while PL2 is assigned to the recombination from the iodine vacancy (VI) to the valence band. Most interestingly, AB2 is presumed to be due to the transition from the valence band to antisites of iodine substituted for copper (ICu), which can be reasonably explained by the off-center model of substituted iodine ions. This work will contribute to developing and understanding opto-electrical devices using CuI.