bluuebunny/crossref_metadata_2025 huggingface dataset:
Fibrous Meningioma with Skull Invasion
Authors: Ichimura Shinya , Takahara Kento , Fujii Koji
Published: December 2019

In patients with meningiomas, the presence of skull invasion is known to be a predictor of aggressive clinical behavior, which may negatively influence patient outcomes. In the present report, we discuss a case of fibrous meningioma with skull invasion. A 42-year-old woman was referred to our department presenting with hyperostosis in the right parietal bone. T1-weighted magnetic resonance imaging with gadolinium enhancement revealed prominent enhancement of the intraosseous lesion and dura mater. Following the removal of the tumor body and bone lesion, we performed immunohistochemical staining for osteopontin (OPN), matrix metalloproteinase- 2 (MMP2), and integrin β-1 (CD29). The tumor body was immunoreactive for OPN and CD29, but not MMP2, whereas, the bone lesion was immunoreactive for all the three antigens. The present case suggests that OPN, MMP2, and CD29 play key regulatory roles in bone invasion.
Supergiant Cavernous Carotid Aneurysm: Successful Management with Ligation of Internal Carotid Artery and STA–MCA Bypass
Authors: Singla Navneet , Aggarwal Ashish , Praneeth Kokkula , Ahuja Chirag
Published: December 2019

Supergiant cerebral aneurysm (size > 6 cm) is a rare and challenging cerebrovascular disease with few documented cases in literature. We describe a simple, safe, and effective treatment option for supergiant cavernous carotid aneurysm and discuss the proposed mechanisms for a favorable outcome.
Mental Health Care Delivery for Older Adults in Rural Greece: Unmet Needs
Authors: Peritogiannis Vaios , Lixouriotis Charalampos
Published: December 2019

Mental disorders may go unrecognized and undertreated in older adults. This is the rationale for the launch of specialized mental health services for the elderly in high resourced settings. Rural areas, however, do not receive adequate mental health care owing to socioeconomic and geographical reasons, and this is the case of rural Greece, where research on mental health of the elderly is scarce. This article discusses the challenges of providing mental health care for older adults in rural Greece and the available options. Care can be delivered through the existing rural mental health services that are the mobile mental health units and through the primary care physicians. Training in psychogeriatrics for the personnel of the former and in mental health for the latter is warranted.
Dopant-induced indirect-direct transition and semiconductor-semimetal transition of bilayer SnSe
Authors: Sirikumara Hansika I. , Morshed Mahir , Jameson Casey , Jayasekera Thushari
Published: December 2019

Tin selenide (SnSe) is a layered semiconductor, which is reported to be the best thermoelectric material to date. Few-layer tin selenide is highly sensitive to external conditions such as strain, pressure, or temperature. Crystal structure of SnSe is orthorhombic, where atoms are arranged in an accordionlike structure with nonbonding intralayer interactions. Bulk and few-layer pristine SnSe are reported to have indirect electron bandgaps. Based on the results from first-principles density functional theory calculations, we show that two major structural changes can happen upon substitutional chemical doping of bilayer SnSe. Substitutional chemical doping can manipulate the directionality of interlayer interactions of bilayer SnSe, which results in an indirect-direct transition of the electronic bandgap. Our results also suggest that larger dopant atoms can convert the nonbonding intralayer interactions to covalent bonding. Such an increase in the atomic orbital overlap may result in a semiconductor-semimetal transition.
Research demonstrates the use of X-ray spectroscopy to study thermally-induced reactions
Authors: Bandari Anashe
Published: December 2019

X-ray spectroscopy applications are extended to include the time-resolved study of reactions caused by temperature jumps in aqueous solutions.
Maternal care of platypus nestlings (Ornithorhynchus anatinus)
Authors: Thomas Jessica L. , Parrott Marissa L. , Handasyde Kathrine A. , Temple-Smith Peter
Published: December 2019

Maternal care in platypuses has never been rigorously studied due to the difficulty in locating and accessing nesting burrows. Here we describe the maternal behaviour of a captive female platypus and the growth and development of her offspring over 11 breeding seasons. We located a nesting burrow and inserted a camera to record the activity and behaviour of the female and her offspring. We also measured the female’s food intake during lactation. The ages of the offspring were assigned to developmental milestones including opening of the eyes and development of pelage. Twins (n=4) were left alone for periods longer than 24h by the mother at an earlier age than single nestlings (n=2). The dietary energy intake of the breeding female was more than double that of non-lactating females in the last month of lactation, indicating the large energy requirements of milk production. The mean age of young at emergence from the burrow was 128±1 days and in 60% of nestlings emergence occurred after weaning. This suggests a rapid transition from a completely milk-based diet to a diet of aquatic macroinvertebrates. The techniques we developed have allowed us to study maternal care in platypuses and the development of nestlings, both of which were previously only poorly understood.
Aboriginal and Torres Strait Islander men and parenting: a scoping review
Authors: Canuto Kootsy , Harfield Stephen G. , Canuto Karla J. , Brown Alex
Published: December 2019

Aboriginal and Torres Strait Islander men rarely rate a mention within discussions of parenting unless framed in the negative, or as the cause of dysfunctional family life. Consequently, the roles and responsibilities of Aboriginal and Torres Strait Islander men within parenting have largely been neglected or ignored. This scoping review aimed to identify and describe Aboriginal and Torres Strait Islander parenting programs that focused on male parents. A comprehensive search was conducted of databases, PubMed and Informit ATSIhealth, to identify peer-review publications, while relevant websites were also searched for grey literature. The review identified eight programs that met the inclusion criteria. The review highlights the lack of rigorously researched and published literature on parenting programs that focus on Aboriginal and Torres Strait Islander male parents. The programs all reported positive outcomes and demonstrate that given the opportunity, Aboriginal and Torres Strait Islander male parents are ready and determined to fulfil their roles and responsibilities as parents to the best of their ability for the benefit of their families and communities. The provision of inclusive parenting programs and services will equip Aboriginal and Torres Strait Islander male parents to better support their families during these important times.
Correlates of alcohol and illicit drug use before commercial sex among transgender women with a history of sex work in China
Authors: Wang Qian , Chang Ruijie , Wang Ying , Jiang Xueqin , Zhang Shuxian , Shen Qiuming , Wang Zixin , Ma Tiecheng , Lau Joseph T. F. , Cai Yong
Published: December 2019

Background Research on substance use among transgender female sex workers in China is scarce. The aims of this study were to examine: (1) the prevalence of alcohol or illicit drug use before commercial sex among this population; and (2) correlates of alcohol and illicit drug use. Methods: Complete survey data were analysed from 397 transgender female sex workers recruited from three of the largest cities in China: Shenyang, Shanghai and Guangzhou. Information was collected about demographics, alcohol or illicit drug use, alone or in combination, and their psychosocial correlates using structured questionnaires. Multinomial logistic regression models were used to examine the association between substance use and its correlates. Results: Before commercial sex, approximately one-third of the sample reported exclusive alcohol use (28.5%), 9.3% reported exclusive drug use and 7.3% reported combined use of alcohol and drugs. Before commercial sex, participants with low self-esteem had twice the odds of using alcohol exclusively (adjusted odds ratio (aOR) 2.05; 95% confidence interval (CI) 1.01–4.17), those with higher levels of loneliness had almost threefold the odds of exclusive drug use (aOR 2.92; 95% CI 1.21–7.07) and those with depression (aOR 2.97; 95% CI 1.11–7.96) and unknown HIV status (aOR 3.00; 95% CI 1.02–8.87) had threefold the odds of combined use of alcohol and drugs. Conclusion: Programs aimed at reducing alcohol or drug use among transgender female sex workers in China may consider adding components that help support mental health and encouraging HIV screening.
Collapses-revivals phenomena induced by weak magnetic flux in diamond chain*
Authors: Chang Na-Na , Jing Wen-Quan , Zhang Yu , Zhang Ai-Xia , Xue Ju-Kui , Kou Su-Peng
Published: December 2019

We investigate the quantum dynamical behaviors of bosons in a diamond chain with weak magnetic flux (WMF), including Landau–Zener tunnelling, Bloch oscillations, localization phenomenon, and collapses-revivals phenomena. We observed that collapses-revivals phenomena can occur in diamond chain with WMF and cannot exist in the strong magnetic flux case as the previous study (Chang N N and Xue J K, 2018, Chin. Phys. B
27 105203). Induced by WMF, the energy band for the system varies from gapless to gapped structure. The position of the extrema of probability amplitude for ground state can also be altered by WMF within a single diamond plaquette. As a consequence, the transitions between different dynamical behaviors of bosons in diamond chain can be manipulated by WMF, depending on its initial configurations.
Phospholipid membrane dynamics at the solid–liquid interface studied with grazing incidence neutron spin echo spectroscopy
Authors: Holderer Olaf , Jaksch Sebastian , Zolnierczuk Piotr , Ohl Michael , Frielinghaus Henrich
Published: December 2019

Neutron spin echo spectroscopy has been used under grazing incidence conditions to study the dynamics of SoyPC phospholipid membranes at the solid-liquid interface. The use of advanced neutron optical components such as a neutron prism and a resonator structure at the interface for an increase in intensity near the interface helped to study partially elastic waves in the phospholipid membrane as well as the influence of Ibuprofen on the membrane elasticity. Previously observed phase transitions of the surface layers of SoyPC from a lamellar structure to surface crystalline phases also showed their imprint in a suppresion of the phospholipid membrane dynamics.
Polarized beam option for the time-of-flight spectrometer NEAT
Authors: Günther G , Mezei F , Füzi J , Gainov R , Krist Th , Sánta Zs , Russina M
Published: December 2019

We present the basic design of the incoming neutron beam polarizer system recently installed at the TOF spectrometer NEAT at HZB and the first experimental test results. The recent upgrade of the instrument resulted in beam flux on the sample, which is one of the highest worldwide for this class of instruments. The substantial intensity gain obtained in the upgrade provides good conditions for polarized neutron experiments, considering the inherent cuts of neutron intensity by polarizing the beam. The neutron beam polarizer is placed inside a 3.8 m long evacuated neutron “guide changer”, which allows us to move into the beam delivery guide one of 3 alternative straight neutron guide sections mounted in parallel on a linear translation stage. The new transmission polarizer takes up the inside volume of a 1.33 m long, 60 mm x 125 mm cross section straight guide portion. The focusing of the beam after the polarizer to the 30 mm x 50 mm sample area happens over a total length of 3.5 m, of which 2.92 cm is a converging guide assembly with m=4 supermirror coating and parabolic end. This guide section leaves 58 cm space between guide exit and sample axis for sample environment equipment, in particular for high field cryomagnets. The transmission polarizer contains 8 “V cavity” channels with non-polarizing supermirror coated, opaque side walls and neutron-transparent Si cavity plates, coated by m=3 polarizing supermirror on both sides. The nominal operational wavelength band width of the polarizer is 2.5 – 8 Å, with measured polarization efficiency between 92 and 96 % for well collimated beam. The beam transmission efficiency for the preferred neutron spin state is about 65 %. The first 110 cm of the neutron spin guide field after the exit of the polarizer is provided by the stray fields of the magnet around the polarizer and of a permanent guide field magnet acting in the same direction. This section contains a wavelength tunable single coil Mezei flipper with flipping efficiency > 99 %. The rest of the guide field magnets are solenoids around the glass neutron beam guide. The supermirror coating in the polarized neutron section of the beam guide has been manufactured using a non-magnetic Ni alloy, the guide exchanger housing and its mechanical parts are made of non-magnetic alloys, primarily stainless steel. The polarized beam delivery system is by now operational and it is available for polarized neutron beam experiments on samples in a magnetic field. A 14 T vertical field cryomagnet is on hand at the HZB Sample Environment Group for use on NEAT. The NEAT sample chamber has been designed and built with non-magnetic or weakly magnetic materials in order to allow both for polarized neutron beam experiments and for polarization analysis work.
Polarization analysis in small-angle neutron scattering with a transportable neutron spin filter based on polarized protons
Authors: Quan Y. , van den Brandt B. , Kohlbrecher J. , Hautle P.
Published: December 2019

We present the status of development of a novel neutron spin filter based on the strong spin dependence of the neutron scattering on protons. Using photo-excited triplet states for the dynamic nuclear polarization (DNP) process, proton polarization values of 80% can now be achieved in pentacene doped single crystals of naphthalene at a field of 0.36 T in a simple helium flow cryostat. Careful sample preparation lead to extremely long polarization decay times under moderate conditions that allowed us to develop a transportable device. The filter is polarized in the lab under well controlled conditions and is then transferred to the neutron beam line where it can be operated during several days with almost constant polarization while requiring only a minimum of equipment. We describe briefly the main features of the spin filter and its use as a spin analyzer in a small-angle neutron scattering (SANS) experiment probing the magnetic structure of a nanocrystalline soft magnetic material. Furthermore the procedure for performing the background and spin leakage corrections of the neutron data is outlined in detail.
Setup for polarized neutron diffraction using a high-Tc superconducting magnet on the instrument POLI at MLZ and its applications
Authors: Thoma H , Deng H , Roth G , Hutanu V
Published: December 2019

A new polarized neutron diffraction setup has been developed for the hot neutron single crystal diffractometer POLI at the Maier-Leibnitz Zentrum (MLZ) in Germany. This setup consists of a 3He spin filter cell for polarization, a Mezei type double coil flipper optimized for short-wavelength neutrons, and a new high-Tc superconducting magnet producing fields up to 2.2 T. Because the magnet provides a symmetric field configuration, a dedicated guide field system was designed in order to avoid neutron depolarization in the zero-field node. The polarization transport efficiency of the whole setup was numerically simulated and optimized using COMSOL Multiphysics®. The polarization losses between the polarizer and the sample were confirmed to be smaller than 1.5% over the total field range of the magnet and the stray fields of the magnet did not affect the relaxation time T
1 of the 3He spin filter polarizer. First experiments with antiferromagnetic and paramagnetic samples using the new setup have been successfully performed. Using the CCSL software, a reconstruction of the field induced spin density distribution in the weak ferromagnet MnCO3 was performed in the paramagnetic state. Our results show the high performance and good resolution of the new setup.
µ-metal magnetic cavities for polarization and maintenance of polarization of 3He gas
Authors: Babcock Earl , Salhi Zahir , Barnsley Lester , Voigt Jörg , Mattauch Stefan , Ioffe Alexander
Published: December 2019

Low gradient magnetic holding fields are required for maintaining the polarization of polarized 3He, as diffusion though non-ideal gradients can cause total relaxation rates much greater than the intrinsic total 3He relaxation rate of a particular 3He cell in optimal conditions. For neutron scattering applications we often rely on µ-metal cavities to provide a degree of shielding from the many other sources of magnetic fields and gradient experienced on a typical neutron instrument. The JCNS utilizes two concepts for such cavities, one based on inexpensive plastic-bonded magnets to provide magnetic flux, and the other based on field coils wound on the sides of the µ-metal cavity. 2 different sized of permanent magnet cavities and three different geometries of coil-based cavities have been produced. Both types of boxes will be presented with magnetic design as well as mechanical construction details along with the achieved performance of the constructed devices.
Attributing ocean acidification to major carbon producers
Authors: Licker R , Ekwurzel B , Doney S C , Cooley S R , Lima I D , Heede R , Frumhoff P C
Published: December 2019

Recent research has quantified the contributions of CO2 and CH4 emissions traced to the products of major fossil fuel companies and cement manufacturers to global atmospheric CO2, surface temperature, and sea level rise. This work has informed societal considerations of the climate responsibilities of these major industrial carbon producers. Here, we extend this work to historical (1880–2015) and recent (1965–2015) acidification of the world’s ocean. Using an energy balance carbon-cycle model, we find that emissions traced to the 88 largest industrial carbon producers from 1880–2015 and 1965–2015 have contributed ∼55% and ∼51%, respectively, of the historical 1880–2015 decline in surface ocean pH. As ocean acidification is not spatially uniform, we employ a three-dimensional ocean model and identify five marine regions with large declines in surface water pH and aragonite saturation state over similar historical (average 1850–1859 to average 2000–2009) and recent (average 1960–1969 to average of 2000–2009) time periods. We characterize the biological and socioeconomic systems in these regions facing loss and damage from ocean acidification in the context of climate change and other stressors. Such analysis can inform societal consideration of carbon producer responsibility for current and near-term risks of further loss and damage to human communities dependent on marine ecosystems and fisheries vulnerable to ocean acidification.
Assessing dengue vector abundance in Penang Island by cluster analysis
Authors: Hashim N A , Ahmad A H , Talib A , Suwarno
Published: December 2019

Dengue is one of the deadliest mosquito-borne diseases in the world. Aedes albopictus and Aedes aegypti are the two responsible vectors for the disease. In this study, self-organizing map (SOM) was applied for ordination, clustering and mapping of the Ae. aegypti and Ae. albopictus abundance with their breeding container sizes. It was found that the abundance of vector related with the size of breeding container. Regardless of urbanization level, Ae. albopictus was more abundant in medium size containers, while Ae. aegypti was found more abundant in large containers. This finding suggested that for control efforts, eliminating medium and large breeding containers will significantly reduce Aedes population in Penang Island.
The potential use of satellite gravity data for oil prospecting in Tanimbar Basin, Eastern Indonesia
Authors: Yanis M , Marwan
Published: December 2019

One way to increase oil and gas production in Indonesia is through the geophysical study for new deposits in Basins frontier, i.e., Tanimbar basin in Province of Maluku, Eastern of Indonesia. The Tanimbar basin is located in an area known as the Outer Banda Arc. Gravity is a usually geophysical method used for the sedimentary basin. But for the regional scale, the method requires an expensive cost and long time-consuming. In this research, we use the satellite gravity data provided by Scripps Institution of Oceanography, University of California San Diego. This data has a low resolution of 1.5 km for 1 pixel and also free access. The satellite data will be compared with the gravity ground survey. The data was acquired by the University of London and Bandung Institute of Technology in 1987. The gravity satellite can show a more contrasting of geological structure compared to the ground survey, as well as syncline and anticline; the anomaly is indicated by the relatively high Bouguer data (3.5 to 25 mGal). The high anomaly is also influenced by tectonic activity from inner and Outer Banda Arc that exists in eastern Indonesia. The sub-sedimentary basin is represented by the low Bouguer anomalies (-40 to -25 mGal) that correlated well to ground survey data. Based on the result, it can be concluded; the satellite gravity is potentially used for delineating the sedimentary basin in Tanimbar Island.
The 2D resistivity modelling on north sumatran fault structure by using magnetotelluric data
Authors: Rizal M , Ismail N , Yanis M , Muzakir  , Surbakti M S
Published: December 2019

Aceh is the region that some parts of the Sumatran Fault System (GSF) pass through. The existence of faults has implications for earthquake events. To understand the impact of seismic activities that occur along the fault, it is necessary to do fault mapping and geometry modelling. In this study, magnetotelluric geophysical methods were used to describe 2D resistivity structures in the northern Sumatran. A geophysical survey using magnetotelluric method was done to image 2D resistivity model along the northern part of the fault. The measurement was carried out two lines, with a length of the profile is 92 km and 114 km, consisting of 14 measurement points across the fault, with distances between tracks ranging from 10-15 km. 2D resistivity models were generated by using the Reduce Basic Occam (REBOCC) code. From the resulted model, it can be interpreted as indications of the existence of the Aceh Segment and Segment Seulimeum Faults. In-line C, there are two locations indicated by faults, namely Saree area associated with the Seulimeum segment and the Jantho area associated with the Aceh segment and line D in the geographic area is associated with the Aceh segment. From the resulted model, the Sumatran Fault in the northern part of Aceh was divided into two segments as shown in the model.
The spatial distribution of Bactrocera dorsalis after 15 years of the 2004 Indian Ocean tsunami in Banda Aceh, Indonesia
Authors: Januarita C , Rahman A , Rasnovi S , Suwarno
Published: December 2019

Bactrocera dorsalis is one of fruit fly species that caused to the decreasing of fruits qualities. The 2004 Indian Ocean tsunami impacted more than 60% Banda Aceh city’s areas and changed the Banda Aceh city’s landscape. The purpose of this study is to analyze the special distribution of B. dorsalis after 15 y of the 2004 Indian Ocean tsunami in Banda Aceh tsunami-affected and non-affected areas. The data was collected from December 2018 to January 2019. The B. dorsalis was trapped by using the Modified Steiner Trap method in four villages, which selected randomly in nine sub-districts in the tsunami-affected and non-affected areas of Banda Aceh. The host plants were selected such as mangos, star fruits, guavas, and jackfruits, which commonly recognized in Banda Aceh. Data was analyzed and presented by using the GIS. After 15 years of the 2004 Indian Ocean tsunami the land and fruits plants have recovered. Bactrocera dorsalis were found in tsunami-affected and non-affected areas with total 2510 of B. dorsalis. There is no significant difference of the spatial distribution of B. dorsalis in both areas.
Utilizing web based GIS services for retrieving and disseminating geographic information for disaster management
Authors: Nizamuddin  , Ardiansyah  , Sofyan H , Muzailin  , Aldika W A
Published: December 2019

The development of Information and Communication Technology (ICT) related to web-based services such as portals, web services and databases (DB) services for searching, retrieving, disseminating and sharing information has also happened in the field of Geographic Information Systems (GIS) through web-based GIS Services. In GIS, the portal is replaced by Geoportal, Web Service by Web Mapping Service (WMS) and Web Feature Service (WFS) while DB Services is replaced by Geographic Database (GeoDB) services. Web based GIS services can be classified as Geoportal, WMS, WFS and GeoDB Services. This research developed a prototype of web-based GIS services for the management of Geographic Information related to disaster management. There are several techniques for developing GIS based web services such as using Content Management Systems for GIS, namely OpenGeo Suite, GeoNode, and ArcGIS based GIS Services. This research focuses on Web-based GIS Services with the ArcGIS platform. The prototype of Web-based GIS Services was built focusing on Geographic information in disaster management cycles such as recovery (rehabilitation and reconstruction), prevention (mitigation), preparedness and emergency response periods.
Purification of Used Cooking Oil Using Activated Carbon Adsorbent from Durian Peel
Authors: Miskah S , Aprianti T , Agustien M , Utama Y , Said M
Published: December 2019

Repeatedly use of cooking oil can cause increasing free fatty acids and peroxide value contained. Therefore, continuous exposure to used cooking oil has known resulting hazardous impacts on the environment and also to human health. Hence, it is necessary to purify used cooking oil before it is discharged to the environment. Durian peel contains high cellulose ranging from 50% - 60%, which is eligible to be used as carbon adsorbent’s raw material for used cooking oil purification. This study produced a kind of carbon adsorbent from durian peel through a carbonization process that lasted for 2 hours at 500°C combustion temperature with a chemical activation using H2SO4 1 N. This study was carried out with the adsorbent weight of 6 grams and various contact times of 30, 60, 90, 120, and 150 minutes. The most favorable results obtained after contact time was 0.0637% of free fatty acid, 0.41 meq O2/kg of peroxide value, and 0.9022 gr/ml of density, respectively, at 150 minutes contact time.
The Role of Food Delivery Services by Online Motorcycle Taxi on the Development of Culinary Home-Based Enterprises
Authors: Tyas W P , Damayanti M , Hutama J K , Saragih D D
Published: December 2019

The existence of home-based enterprises (HBEs) as the activities that utilize house as a place both to live and to generate income has been challenged by competition among them. The enterprises can take the advantages of technological advances to overcome this issue. One of the technologies that support the development of HBEs is online motorcycle taxi as a part of innovation in the urban infrastructure. The research case study area is around the area of UNDIP Tembalang-Semarang that is known as an education and housing area with many culinary businesses supplying the needs of students and the local community. Hence, this study takes a case of culinary HBEs that benefits from the existence of food delivery services provided by online motorcycle taxi. This study aims to examine the role of food delivery services provided by online motorcycle taxi in the development of culinary HBEs around the education area. This research uses both quantitative and qualitative descriptive method. The roles of this online services are examined from the perspective of culinary HBEs owners, online motorcycle taxi riders, and the consumers. The result is that there are several roles of online motorcycle taxi services namely maximizing business potential, helping business promotion activities, and providing easy access to customers, can be seen from the increasing income offline and online transactions and also the increasing service coverage of the culinary HBEs.
Traffic Management for Jalan Kayu Ayu in Seminyak Area, Badung Regency
Authors: Mataram I N K , Wikrama A A N A J , Suartika I G A M
Published: December 2019

The usage of land for commercial purpose along the side of the road often causes conflicts. One of the areas in Badung Regency, namely along the road called Jalan Kayu Aya, is an attractive tourism area, the passageway is quite large, while on the other hand the effective width of the road is only 5 meters. The purpose of this study is to analyze the performance and the current condition of the road as well as to analyze alternative solutions for improvement. Based on the results of the analysis, the peak hours at Jalan Kayu Aya Badung Regency is at 23.15-00.15 WITA, with a traffic volume of 1,078 pcu / hour, road capacity of 1236.51 pcu / hour, actual speed of 19, 26 km / h and a saturation level is 0.87 and an F for the level of road service. The analysis results of alternative 1 with the arrangement of side barriers shows that the traffic volume becomes 1,078 pcu / hour. The road’s capacity is 1404.43 pcu / hour, the actual speed is 27.23 km / h and the saturation level is 0.77 with a C for the level of road service. While the analysis of alternative 2 with the application of one-way roads results in a traffic volume of 550.2 pcu / hour, the capacity of the road’s passage is 1407.06 pcu / hour, the actual speed is 27.23 km / h and saturation level is 0.77 with a road service level of B.
Evaluation and study of minimarket potential locations in BWK I, Semarang City
Authors: Pramukti D , Tyas W P
Published: December 2019

Nowadays the population in Semarang City is increasing rapidly, this is also followed by the development of economic activities in the trade and services sectors. The minimization of the Minimarket to the lower middle trade sector can be seen from the increase in quantity. In 2010 the number of minimarkets in Semarang City had 244 buildings and continued to increase every year. This has an impact on land use change and will affect the existence of traditional markets. This research uses descriptive quantitative method with emphasis on spatial perspective. Aims to identify the needs, distribution patterns, service coverage (trade area), and suitability of the existing minimarkets. This study shows that the number of existing minimarkets exceeds the limits of what they should be. Based on the analysis of the suitability of the location of the existing minimarkets, as many as 11 minimarket buildings are included in the appropriate category from a total of 92 buildings.
The Hexa-Helix Concept for Supporting Sustainable Regional Development (Case Study: Citatah Area, Padalarang Subdistrict, West Java, Indonesia)
Authors: Zakaria Z , Sophian R I , Muljana B , Gusriani N , Zakaria S
Published: December 2019

A regional development requires some analyses in terms of the constraint and the potential. Constraints of a development need to be managed by periodic monitoring, while the potentials need to be maintained or optimally improved. The hexa-helix concept is a development of penta-helix concept with addition in the role of law and regulation. Citatah area is a multipurpose area where there is limestone quarry, factories, tourist attractions, and rock-climbing area as territoral potential. The constraints is found in Citatah are landslides and faults. To support the potential of the region, infrastructures need to be safe from landslide. The stable slopes have been built through terracing and engineered slopes. This research is directed to identify potentials and constraint in development of the Citatah area; evaluate safety factors around landslide prone areas; and inventory the role of hexa-helix agents in the infrastructure of road around the engineeried slope. The result shows that regional potential needs to be managed by utilizing the hexa-helix concept. Besides, the Citatah landslide zone needs to be aware. Environmental management and monitoring are required to avoid failure of development planning in the future. The result of this study will be useful for sustainable regional development in Citatah area.
Experimental research and modeling of chemical anchor systems under static and dynamic loading
Authors: Demiyanushko I.V. , Nadezhdin V.S. , Karpov I.A. , Tavshavadze B.T. , Titov O.V.
Published: December 2019

In article considered modeling of fastening post bridge barriers to the bridge, bearing system used chemical adhesive anchor systems at static and dynamic loads. In paper shown the possibilities of the analysis of the causes of critical plastic deformations and extreme stresses in the bridge barrier elements at the static and dynamic loads due to crash of the vehicle on bridge barriers. Analysis of the operation of bridge barriers in a collision allowed the optimal parameters to provided and saved lives in case of accidents.
Vibration and harmonic analysis of moderately thick anti-symmetric cross-ply laminated composite plate using FEM
Authors: Narwariya Manoj , Patidar Vinod , Sharma Avadesh K.
Published: December 2019

This work presents vibration and harmonic behaviour of cross-ply composite plates with anti-symmetric lamination scheme of layers. Convergence test and comparison studies for different parameters with respect to number of modes have been carried out using the finite element method. The finite element package ANSYS is used to determine the frequency parameter and resonance amplitude of the plate. The effects of different parameters on the vibration and harmonic behaviour, are discussed. The frequency-amplitude relationships are obtained and presented on frequency response function graph. The clamped, simply supported, free and the combinations of boundary conditions are considered. Effects of damping factor on harmonic response are also investigated.
Harmonic Analysis of symmetric and anti-symmetric laminated skew plate using finite element method
Authors: Narwariya Manoj , Sharma Avadesh K. , Patidar Vinod , Chauhan Premanand S.
Published: December 2019

In this paper, harmonic behaviour of laminated composite skew plates is presented with a symmetric and anti-symmetric arrangement of layers. The convergence and validity of the model have been checked by comparing different type of example available in published literature. From the comparison study, it can be easily observed that proposed model is being capable of solving the skew structures with adequate accuracy. The effects of various skew angles, lamination scheme and number of layers have been demonstrated. The results show the maximum variation in the non-dimensional fundamental frequency is limited to 3% for a symmetrically laminated skew plate. It is clear from the results that the maximum resonance amplitude occurs at the first fundamental mode of vibration at different skew angle. Finite element package ANSYS is employed for analysis of the plates. The SHELL281 element is chosen to mesh the model.
Reliability and Maintainability Analysis of LHD Loader at Saoner Mines, Nagpur, India
Authors: Vashistha Saurabh , Kumar Agrawal Anil , Siddiqui Mohd A H , Chattopadhyaya Somnath
Published: December 2019

In this era of intense economic competition as well as harsh and complicated environmental conditions, it is of utmost importance to achieve the high productivity and production of the mining equipment. This paper strives to analyze reliability and maintainability of Load, haul and dump (LHD) machine and to compute inherent availability of LHD machine in Saoner Mine Nagpur India. In this paper, renewal process is used for the modelling of the mechanical failures of the LHD. The validation of data whether it is independent and identically distributed (IID) is done by assessing the presence of trend and serial correlation with the help of graphical method. The parameters of various distributions were found by using Math Wave Easy Fit 5.6 professional software. Chi-square test has been applied for selecting the best fit distribution model. Further the study of the two parameter log normal distribution theory and its parameters is presented using log normal probability theory. The study reflects that analysis of reliability is a powerful tool for determining the intervals of maintenance.
Reliability and maintainability analysis of universal drill machine at Saoner mines, Nagpur, India
Authors: Gaurav Kumar , Agrawal Anil K. , Chattopadhyaya S , Siddiqui Mohd A H
Published: December 2019

Mining is the extraction of coal and minerals from the earth crust. Mining is mainly divided into two categories: opencast and underground mining. These mining activities are accomplished with the help of heavy engineering machine. The execution of these mining machines depends on machine reliability, operating environment, operating process and skill of the operator. In mining, a large number of heavy machinery are used and those are very costly. The failure of these machinery effects coal production. Therefore to overcomethese losses, reliability analysis is required. This paper represents a case study showing reliability and maintainability of universal drill machine (UDM) at Saoner mines, Nagpur, India. UDM is a crucial mechanism for the mining industry. The main work carried out by these machinesis drilling operation at a minimum time with higher accuracy resulting in the increased productivity. For survival in the intense competition and complicated environmental condition, it is necessary that UDM must be maintained effectively and efficiently. To check whether the collected data are independent and identically distributed(IID) or not, trend and serial correlation test are performed. To get the best fit distribution of data by K-S test, the easy-fit software is used. These distributions draw reliability as well as maintainability graph of the system. These graphs show that the machine is not working properly. To achieve high reliability of UDM, proper review of maintenance programme should be done.
Performance and Emission Characteristics of Combined Biodiesel Blend of Non-Edible Oil in Diesel Engine
Authors: Verma Brijesh , Raj Bundel Bharat , Sharma Abhishek
Published: December 2019

Nowadays every country is facing energy crisis. Continuous extraction of crude oil resulting in depletion of fossil fuels reserves. It is motivating researchers to develop alternative source of enrgy.Biodiesel is promising alternative for petro-diesel. Lot of work has been done on single biodiesel blend of edible and non-edible source of energy. Very few works has been found on dual biodiesel blend. In the present study, combined blend of second-generation fuel (Jathropha and Karanja) was studied on single cylinder four-stroke multi fuel diesel engine test rig. Performance and emission analysis has been examined at different load and constant speed (1500 rpm). Result showed that break thermal efficiency of diesel is higher than all blends of biodiesel. Break specific fuel consumption of combined blend (JK15KB15) was significantly higher than diesel and marginally lower than single blend of Jathropha (JB30) or Karanja (KB30). Combined blend of JB15KB15 showed lower HC, CO emission but higher NOx emission than diesel. Moreover JK15KB15 showed better emission characteristics than single biodiesel blend with diesel.
Effect of thermoelectric materials in electrical and thermal performance of photovoltaic thermal (PVT) collector
Authors: Gupta Anmol , Agrawal Sanjay , Pal Yash
Published: December 2019

A photovoltaic integrated thermal (PVT) collector with thermoelectric material has been proposed in this communication, where a channel or duct has been used below the photovoltaic module in which air has been circulated to extract the heat taken by the photovoltaic module. Hence in PVT system, electrical energy from photovoltaic and thermal energy from duct are taken at the output. In this collector, thermoelectric (TE) is used to change the thermal energy by removing the waste heat of photovoltaic module into electric energy. In proposed PVT with thermoelectric system, TEs are generally appended at the back of the photovoltaic to improve the efficiency of PVT collectors. Thermal modelling has been presented for PVT collector with thermoelectric. The effect of thermoelectric material has been analysed for PVT collector. The electrical energy gain for photovoltaic collector and overall electrical energy gain with thermoelectric has been theoretically calculated. From the computed results, the overall electrical output is observed of PVT system with thermoelectric material; it is higher than only PVT system due to thermoelectric. As PVT system without thermoelectric generates only electrical energy due to PV and thermal energy but PVT system with thermoelectric generates electrical energy due to PV and thermoelectric both as well as thermal energy so overall exergy of PVT system with thermoelectric is higher than only PVT system. Hence PVT system with thermoelectric shows better results than only PVT system in respect of electrical, thermal and overall exergy gain.
Water Filtration using Plant Xylem in Northern India
Authors: Ahmad Ansari Mubashshir , Mustafa Sameen , Husain Taliv , Ali Rashid
Published: December 2019

Currently, the world is facing scarcity of clean and potable drinking water. We have investigated whether the xylem (a porous conducting tissue) of a plant could be used as a filter to obtain drinking water. Firstly, we chose the appropriate plant for filtration based on our experimentation. Secondly, we used xylem to make a simple water filter and carried out experiments under the pressure head of the pump. Experiments were conducted using xylems of both angiosperms and gymnosperms. Freshly cut xylems of Ashoka tree, Silver Oak, Neem, Mango and Guava trees were screened for filtration. Filtration rate was measured for each plant and they were simultaneously checked for filterability of blue dye water solution. We found that sharp-edged, waxy leaf trees such as Ashoka and Silver Oak can filter water. These belong to the class of gymnosperms. Trees that bloom and give fruit (such as Neem) cannot purify water and remove impurities. The measured flow rate under a pressure of 2.5 psi was about 0.083 ml/s, which corresponds to a filtration rate of 7 litres per day or more and is sufficient for two people.
Assessment & anthology of sustainable sources of energy using an approach of PROMETHEE
Authors: Sharma Deepak , Pandey Atul , Kumar Chandan , Ranjan R K
Published: December 2019

The energy mix in India relies heavily on the energy sources basically categorized as conventional. Renewable energy (RE) encouragements in India have to be seen from a long term and wider frame of reference, so that it contributes towards reliability and energy security. This paper vital motive is to assess and prioritize the sustainable energy sources in India which are accomplishing utmost factors like acceptability, space limits, availability, gestation period, safety considerations, localization and execution. Sources consider for analysis are solar, wind, hydro and nuclear energy. PROMETHEE (Preference Ranking Organization Method for Enrichment Evaluation) have been used to achieve the suitability among the sources of energy and to persuade different factors. This paper concluded solar energy as the most profitable and economical energy source for India, followed by wind energy, than hydro energy and in the last nuclear energy. Nuclear energy acceptability is low in view of the fact of public oppression and the corresponding dangers bound with unbinding power of atom. This paper may help the decision makers to formulate long-term energy policy aiming for sustainability.
Experimental investigation of CrN coating deposited by PVD Process
Authors: Kumar Singh Shailesh , Chattopadhyaya Somnath , Pramanik A. , Kumar Sanjeev
Published: December 2019

The aim of this study to analyse the tribological behaviour of chromium nitride coating on gray cast iron as substrate at room temperature in dry conditions.Gray cast iron alloyis extensively used in the automotive industry, was coated by the physical vapour deposition method. Pin-On-Disc tribometerwas used for wear test at a simultaneousincrease of loads (10, 20, 30 and 40N) and corresponding speed (0.5, 1, 1.5 and 2m/s) on mass loss, wear rate, the coefficient of friction was analysed. The wear mechanism is studied by the SEM micrograph, results in a transformation of mild to severe wear, followed three-body abrasion, and oxidation wear for dry conditions.
Impact of variables affecting biogas production from biomass
Authors: Saraswat Manish , Garg Monika , Bhardwaj Mehul , Mehrotra Mridul , Singhal Ritik
Published: December 2019

As a substitution of fossil fuels and a resource of Renewable Energy, Biogas is of vital important in this era of abated energy resources. Production of biogasfrom anaerobic digestion by utilization of waste and organic matter provides an excellent solution for waste management. In this review, it is shown that what are the main factors which affectthe biogas production, how they are affecting and at what condition optimal results are produced. Temperature is the important factor which affects the biogas production. At higher temperature, maximum biogas is produced.There are other factors like the C/N ratio, pH value, compression ratio, and thetotal solid concentration whichare affecting the biogas production. In this paper concentration of all these factors at variousconditions has been noted and the optimal conditionis specified. It is also specified at what condition the higher gas yield will be produced.
Measures to accelerate the sustainable growth of small sectors: a literature review
Authors: Singh Brijesh
Published: December 2019

This is evident that nation’s economic and social development is well supported by small manufacturing sectors that comprises of Micro, Small and Medium Enterprises. Worldwide, these contribute in the growth of country’s gross domestic production, employment and export in a significant manner. These small sectors need to improve their performance and competitiveness so as to ensure their survival and prosperity in this agile world. In this paper, a literature review is presented that focuses on the key areas that need sincere attention for improvement and thus, a research/study can be planned so as to suggest the measures to be taken to ensure sustainable growth of an enterprise.
Computational flow analysis of bubble formation dynamics in a liquid column subjected to high centrifugal force
Authors: Kumar Veerendra , Singhal Gaurav , Kumar Singh Vinod , Srivastava H. B.
Published: December 2019

Bubbling of gaseous medium in a liquid column is integral to many multiphase process reactors involving liquid phase and gas phase reactants. In one such reactor called centri-bubble singlet oxygen generator (CBSOG), chlorine gas is injected against a substantively high centrifugal force into a layer of basic hydrogen peroxide (BHP) solution. This process generates small bubbles that facilitate the reaction between chlorine gas and BHP solution at the gas liquid interface, resulting in the production of singlet oxygen. Performance of this device depends primarily on bubble formation time, its shape and size, and its interaction with other bubbles. This paper presents the numerical analysis of bubble formation at high centrifugal force (3800 m/s2) for various gas flow rates at orifice sizes of 0.3mm and 0.5mm. The volume of fluid (VOF) model of the computational flow dynamics (CFD) solver Fluent has been used for the computations to carry out a transient 3-dimensional simulation for generation of bubbles in a laminar incompressible flow.