bluuebunny/crossref_metadata_2025 huggingface dataset:
Simultaneous workload balancing and travel time minimization of automatic guided vehicles
Authors: Chawla V.K. , Chanda A.K. , Angra Surjit
Published: August 2019

This paper presents the application of a novel modified memetic particle swarm optimization algorithm (MMPSO) for simultaneous workload balancing and travel time minimization of automatic guided vehicles (AGVs) in the flexible manufacturing system (FMS). Three FMS layouts consisting of 5; 7 and 9 work centers are considered respectively for the simultaneous scheduling of AGVs in the FMS layouts. The resulting yield from the MMPSO algorithm is compared with the resulting yield of other implemented methods. From the results, it is observed that the application of the MMPSO algorithm outperforms the other applied algorithms from the literature. It was also observed that by the application of MMPSO algorithm a balanced exploration and exploitation of solutions can be achieved for the simultaneous scheduling of AGVs in the FMS.
Design and development of fixture and modification of existing AFM setup to magnetic abrasive flow machining (MAFM) process setup
Authors: Chawla Gagandeep , Mittal Vinod Kumar , Mittal Sushil
Published: August 2019

To finish multifaceted geometries, miniaturized parts, especially of internal inaccessible cavities or recesses by the use of abrasives media with other constituents is known as abrasive flow machining (AFM). With the help of hydraulic pressure system, the media is extruded to-and-fro over the surface in this process. Recently, numerous amendments have been made for improving the performance of the AFM process. This paper presents a new modified AFM process known as magnetic abrasive flow machining process (MAFM) that is used to finish internal cylindrical surfaces. In MAFM process the electromagnet is made-up to locate around the cylindrical work-piece. For providing maximum magnetic field nearby the whole internal surface of the work-piece, there are two poles that are bounded by copper coils. In MAFM, aluminium fixture is considered to enhance the magnetic effect around the workpiece surface that helps in increasing the MRR and change in surface roughness (ΔRa).
Efficient 2D C0 FE based HOZT for analysis of singly curved laminated composite shell structures under point load
Authors: Garg A , Chalak H D
Published: August 2019

An efficient Higher order zigzag theory (HOZT) is proposed in this paper for analysis of laminated composite singly curved shell structures acted by point load on surface. The formulation includes effects of transverse displacement during analysis. Constant transverse displacement is assumed in face sheets while parabolic variation of transverse displacement field is assumed for central layer. Nine noded C0 finite element (FE) with eleven degrees of freedom per node is used for carrying out solution. Stress continuity at interfaces and zero stress condition at top and bottom face of shell are also included during formulation. A number of problems are solved for cylindrical shell panels subjected to point load is analysed. Present results are found in accordance with results those already available in literature.
Design and analysis of a BELBIC controlled semi active suspension system
Authors: Sharma P , Kumar V
Published: August 2019

The vehicle dynamics gives lot of consideration to quality of ride and the value of comfort. These two are dependent on the suspension system of the vehicle. Researchers are doing a lot of work in the field of improving these two parameters. A lot of approaches and control systems like ANN, GA based system, fuzzy and hybrid control systems have been formulated, simulated and tested. This paper deals with mathematical modeling and simulation of passive and semi active system. The semi active system modeled here contains a new approach of using intelligent controller based on Brain functioning with emotional signal, known as BELBIC. The use of this controller has not been tested for suspension system as identified through rigorous literature survey. The both systems are simulated for their response to disturbance of road as step function and as profile of cosine shape. The results of passive and proposed semi active system were analyzed to compare their performance in terms of displacement of sprung mass and suspension travel as well as their settling time. The BEL controlled system has performed very good. The displacement of sprung body has been reduced in both the cases of road disturbances. The response against step input is better than cosine. Similarly settling time has also shown in improvement for step and cosine function.
Thermal performance of a vapour adsorption refrigeration system: an overview
Authors: Singh Sohan , Dhingra Sunil
Published: August 2019

The paper gives the latest review on the thermodynamics modeling and the COP of vapour adsorption refrigeration system operating with one bed or double bed intermittent cycle. A detailed literature review has been carried on the principle of adsorption, properties of adsorbent-adsorbate materials, and this adsorbent-adsorbate work with vapour adsorption cycle. It was observed that the technology is very attractive, but it has limitations relating to its low coefficient of performance. A survey of new research techniques for the improvement is also shown in this paper. It showed that there were adsorption systems which can be useful for ice-making, air-conditioning, refrigeration, as stand alone or hybrids systems, but also cater to environmental protection and energy conservation.
Development of high resolution methods for analyzing multi-fluid problems
Authors: Ray M P , Puranik B P , Bhandarkar U V
Published: August 2019

High resolution multi-fluid solvers are developed, using a fifth order weighted essentially non-oscillatory approach for spatial reconstruction and a third order Runge-Kutta scheme for temporal integration. Several flux evaluation schemes, comprising of exact and approximate Riemann solvers available in the literature are incorporated. Multi-fluid simulation capability is achieved using the ghost fluid method. Two-dimensional geometry is considered, and the Euler equations of gas dynamics are used as the basic flow model in view of the fact that the viscosity effects are negligible for most of the time of interest. Relative performance of these solvers is evaluated for several one- and two-dimensional test cases, before simulating the shock-bubble interaction. Three Mach numbers and air-Helium gas combination is studied and the results are presented in this study. Numerical schlieren images are rendered for qualitative study while time evolution of several integral features such as the axial and lateral deformations, the translational velocity of the bubble, the circulation in the flow-field, and the stretching rates of the bubbles are analyzed for quantitative studies. The results are consistent with the strength of baroclinic source term.
Identification and Prioritization Lean Six Sigma Barriers in MSMEs
Authors: Rathi Rajeev , kumar Ankush , Khanduja Dinesh
Published: August 2019

The competition in market is increasing day by day and there is always fluctuation in demand and supply. To retain in market, organizations have to meet the customer demand to get customer utmost satisfaction. Mainly, micro, small and medium enterprises (MSMEs) are struggling with such problems as they are having limited resources. To stay remain in competition there is only one way to improve productivity by optimum utilization of available resources by reducing waste and defects in product and processes. In this context, Lean Six Sigma (LSS) is emerging as a potential strategy that can be able to improve the processes very easily. LSS is the integration of two different continuous improvement approaches; Lean and Six Sigma that is used to reduce waste and variation in processes but many organizations still facing challenges to implement LSS successfully. So, the main aim of present study is to identify the barriers of LSS and prioritize them using analytic hierarchy process (AHP). The most critical barrier category comes out as management based barrier as it possess highest AHP index. This study will help the mangers and researchers to focus on critical barriers of LSS so as to implement it in a smoother way.
Effect of milling time on the compressive high strain rate behavior of Al-SiC Composite
Authors: Chouhan Tulsi , Soni Manoj , Chouhan Hemant
Published: August 2019

Aluminum-Silicon carbide (Al-SiC) metal matrix composite (MMC) have gained importance as a new class of material capable of serving the future generation brake material requirements. The presented study deals with the compressive high strain rate behavior of Al-SiC composite comprising 15% SiC by weight. The MMC specimens were fabricated by powder metallurgy route. Three different ball milling times were selected for the study purpose after optimizing all other processing parameters. Incorporation of SiC invariably enhanced the hardness, quasi-static and dynamic compressive strength of Al-SiC composite. Hardness was noted to enhance as a function of increasing ball milling time. However, the quasi-static and dynamic compression properties were recorded highest for the ball milling time of 240 minutes. The study confirms that minor addition of a suitable reinforcing material can significantly improve the properties of an MMC. Also, increasing the ball mill time may not necessarily enhance all the material properties.
Numerical and experimental investigations on film cooling with single film hole diameter wide trench for improved cooling performance
Authors: Krishna Anand V G , Parammasivam K M
Published: August 2019

Trench film cooling employs film holes embedded in slot depression created on the surface with the application of thermal barrier coating. The aim of present investigation is to analyse the film cooling effectiveness (FCE) of single film hole diameter (1D) wide trench, 1D trench with trailing edge modifications and to compare its performance with two film hole diameter wide trench (2D). Results of the study show that single film hole diameter wide trench with bevelled trailing edge modifications produced improved film cooling performance compared to two film hole diameter wide trench and other tested cases. Experimental results show close agreement with computational data. The single film hole diameter wide trench with bevelled trailing edge shows highest local, lateral averaged and spatial averaged FCE. The bevelled model trench delivered higher FCE at all three tested blowing ratios.
Optimization of the effect of indentation Load and dwell Time on Micro hardness values using Fuzzy logic predictive model
Authors: Khajuria G. , Wani M. F. , Mushtaq S. , Sehgal Rakesh
Published: August 2019

Nimonic 80A and Nimonic 90 belong to the family of nickel based super alloys and are widely used in high temperature applications. In this study, the effect of indentation load (10 to1000 gf) and dwell time (3to15 s) on the micro-hardness of Nimonic 80A and Nimonic 90 are investigated. A fuzzy logic predictive model is established to predict the micro hardness with respect to changes in the input parameters of indentation load and dwell time. The experimental results show a good degree of agreement with the fuzzy logic model, for both Nimonic 80A and Nimonic 90 with a minimum error %age of 3.05 and 1.80 respectively.
A Modeling Paradigm for Product Specific Design Analysis Integration
Authors: Saini P K
Published: August 2019

In spite of recent advancements in computer aided design and engineering (CAD/CAE), such as parametric geometry and automatic mesh generation, a large gap exists between computer based design model and analysis model. In this paper, a new product specific approach to integrate design and analysis integration is proposed. The primary objective of this approach is to capture designer’s intent from the limited interaction with the designer in a language that is familiar to designer and to provide the feed back on the suitability of the design based on the finite element analysis (FEA) so that the design is automatically and iteratively modified. Hence, the proposed modeling paradigm provides capabilities of analysis to the designer and acts as a black box without requiring the designer to possess relevant knowledge of FEA. Priority has been given to the class of problems termed as routine analysis – the regularly used, established analysis model in the product design. A representative case study pertaining to Belleville spring is discussed in the context of the proposed methodology to demonstrate that it enables highly automated routine analysis through FEA for the model.
Exergy investigation of a vapor compression system comprising ejector for isentropic expansion
Authors: Baruah A , Saini D K , Sachdeva G
Published: August 2019

A modified vapor compression refrigeration system using ejector as an expansion device has been studied in this paper. The new system gives higher cooling effect and requires lesser compressor work than typical vapor compression system under similar operating conditions. Exergy analysis has been done to determine the scope of performance improvement in various components of the modified system. Three refrigerants namely R134a, R407C and R410A have been taken for the analysis due to their wide usage in the commercial refrigeration and air conditioning systems. The system is found to have highest 2nd law efficiency of 53.32% with R134a at 35°C condenser temperature and 5°C evaporator temperature. The increase in condenser temperature increases the total irreversibility of the system. The maximum exergy destruction has been observed in condenser for all the refrigerants. The analysis has been carried out in Engineering Equation Solver.
Performance prediction of ejector refrigeration system using R1234yf as working fluid
Authors: Sharma B , Shubham S , Sachdeva G
Published: August 2019

An ejector compression system for cooling is introduced which utilizes low-grade energy freely available from renewable resources like solar energy, bio waste etc. In this paper the performance of system is evaluated applying the conservation principles of mass and energy on ejector considering it as a control volume. The behavior of the ratio of mass flow rate of fluid from evaporator to the mass flow rate of fluid from generator, COP and cooling effect by varying the condenser/evaporator temperature have been observed. The refrigerant R1234yf which has low ODP and GWP has been used and the analysis has been done with the help of Engineering Equation Solver (EES) Software. Maximum COP of the system is found to be 0.3458 at the evaporator temperature 10°C, condenser temperature 30°C and generator temperature 70°C.
Experimental Evaluation of High Temperature Corrosion Performance of 75Ni25Cr Coated and Bare 347H SS in Air and Simulated Husk Fired Boiler Environment
Authors: Gada Hannan , Mudgal Deepa , Ahmad Babar
Published: August 2019

Corrosion occurring at elevated temperatures is a serious problem in areas such as gas turbine applications and power plants that use high temperature boilers. In this paper, we carry out experimental investigation for reducing corrosion rate so as to enhance the corrosion and wear characteristics of 347HSS and quantify the effect of 75Ni25Cr on 347HSS in terms of improved corrosion resistance. A coating of 75Ni25Cr was deposited on 347HSS boiler tube by the process of Detonation Gun. Corrosion studies were conducted on bare as well as D-Gun coated 347H stainless steel specimens in air and simulated husk fired boiler atmosphere at 800°C under cyclic conditions. Each cycle consisted one hour of heating in the tubular furnace and 20 min of cooling at room temperature. Fifty such cycles were completed to observe performance of these specimens. The weight change measurements were performed after each cycle to establish the kinetics of corrosion using weighing balance. Scanning Electron Microscopy, X-ray diffraction and X-ray mapping analysis techniques were used to analyse the corrosion products formed on the surface of these substrates.
Automation Strategy for Black Tea Production Line
Authors: Kaushik N
Published: August 2019

Tea is one of the primary beverages consumed with its added health benefits. India enjoyed supremacy in its production till a significant period. But, recently it is lagging behind in the race being surpassed by some neighbouring countries. The aforesaid issue is a matter of serious concern as it has a major share to contribute in the Gross Domestic Product (GDP) of the country and hence is a sizeable foreign exchange earner. The effect has arisen due to lack of varieties and cumbersome approach to the production of tea. Hence, this paper focuses on Computer Integrated Manufacturing (CIM) of tea industry which leads to automated production and scope of implementation of mixed assembly lines, thereby increasing the scope of the global market capture of sales. The automation is designed on Programmable Logic Controller (PLC) based control of the CTC (Crush, Tear & Curl) tea manufacturing processes. The user interface has been proposed to be developed with the help of a SCADA software. The interfacing of PLC and SCADA can be achieved by OPC communication. Virtual commissioning of the entire production line can be achieved by plant simulation.
Effect of small forces on microsphere under optical trap
Authors: Kumar Rajesh , Bharadwaj Lalit M , Lall Arun K
Published: August 2019

In this era of technological development, greater impact of nanotechnology now can be seen in many fields due to better properties and precise control. Many functions are being executed by bio nano-materials or biomolecules in living systems in a very efficient manner. The functional behaviour and their properties need to be examined to use them for various nano-device applications. The mechanical properties of the biomolecules can be studied by attaching them with microspheres and measuring forces on these microspheres through optical trap. Microspheres of three-micrometer diameter were trapped at the focus of infrared laser and viscous drag forces were applied to measure the effect of these forces on the trapped microsphere. It was observed that with 28mW intensity Laser, the trapped microsphere was displaced by 0.19 μm at 2.1 pN force and trap stiffness was determined as 0.011pN/nm. The findings can be useful while attaching these microspheres as cargos along the bionanomotors for nanorobotics and drug delivery applications.
Fuzzy DEMATEL approach for agile supplier selections performance criteria
Authors: Kumar Mukesh , Garg Dixit , Agarwal Ashish
Published: August 2019

The strategy of agile supplier selections (ASS) process has adopted the recent era due to global competitive edges in a rapidly changing business environment. The sustainable agile performance criteria are the key necessity for market variations and more customer responsiveness. Therefore, the adaptation of ASS process is a key requirement to overcome the market variations and influence by number’s criteria. ASS is a major issue in Supply Chain Management (SCM), due to various uncertainties of market demand, lumpy demand, mismatch of supply and demand patterns, in these causes’ selection of supplier procedure is a difficult task in the automotive industry. Due to volatile market demand and more customer responsiveness, it is stimulating that inter-organization to balances the effective and efficient customer needs in volatile market demand patterns. This problem will be resolved by incorporating with human judgment skill capability in linguistic scale patterns. ASS has employed such method as the Fuzzy logic and DEMATEL approaches to perform better in global competitiveness. It strives to sustain the volatile market demand by appropriate ASS performance criteria. With the help of the literature survey, 14 agile supplier selection criteria have selected for better influence or support for ASS procedures.
Thermodynamically optimal creation of correlations
Authors: Bakhshinezhad Faraj , Clivaz Fabien , Vitagliano Giuseppe , Erker Paul , Rezakhani Ali , Huber Marcus , Friis Nicolai
Published: August 2019

Correlations lie at the heart of almost all scientific predictions. It is therefore of interest to ask whether there exist general limitations to the amount of correlations that can be created at a finite amount of invested energy. Within quantum thermodynamics such limitations can be derived from first principles. In particular, it can be shown that establishing correlations between initially uncorrelated systems in a thermal background has an energetic cost. This cost, which depends on the system dimension and the details of the energy-level structure, can be bounded from below but whether these bounds are achievable is an open question. Here, we put forward a framework for studying the process of optimally correlating identical (thermal) quantum systems. The framework is based on decompositions into subspaces that each support only states with diagonal (classical) marginals. Using methods from stochastic majorisation theory, we show that the creation of correlations at minimal energy cost is possible for all pairs of three- and four-dimensional quantum systems. For higher dimensions we provide sufficient conditions for the existence of such optimally correlating operations, which we conjecture to exist in all dimensions.
Production performance of laying Japanese quail that given citric acid as acidifier
Authors: Napirah Astriana , Has Hamdan , Pagala Amrullah , Nafiu La Ode
Published: August 2019

This research aimed to study the effect of citric acid on production performance of laying Japanese quail. One hundred of 12 weeks laying Japanese quails were divided into 4 treatments and 5 replication based on completely randomized design. The treatments were citric acid addition level, they were 0, 0,3, 0,6, and 0,9% of citric acid. This research used a self-mixing feed that contained 2800 kcal/kg metabolizable energy and 17,5% crude protein. The parameters measured were feed consumption, egg weight, egg production, and feed conversion ratio. The obtained data during 4 weeks measurement were analyzed using variance analysis and continued with Duncan’s Multiple Range Test. The result showed that addition of citric acid on Japanese quail feed did not give any significant effect (P>0,05) on feed consumption and egg weight, but the addition of citric acid gave a significant effect (P<0,05) on egg production and feed conversion ratio. During 4 weeks, addition 0,6% citrit acid showed egg production above 75%. It can be concluded that addition of 0,6% citric acid showed a better egg production and feed conversion ratio performance.
The relationship between hormone and blood mineral connection with the success of artificial insemination in Bali cow on the low and medium areas Jambi Province
Authors: Hoesni Fachroerrozi , Firmansyah
Published: August 2019

The purpose of this study was to analyze the relationship between the content of the hormone progesterone and minerals in the blood with the success of artificial insemination in Bali cattle in the medium and lowlands of Jambi Province. The research method used in this study is survey and laboratory. The survey method is used to evaluate the success of AI in the form of service per conception (S/C). The sampling technique used in this research is Stratified Random Sampling which consists of 2 strata, namely: Strata I is bali cattle that are inseminated by inseminators in the medium areas of Jambi Province represented by Tebo District. Stara II is a bali cattle that is inseminated by inseminators in the lowand areas of Jambi Province represented by Tanjung Jabung Barat District. Laboratory research was conducted to measure the blood and mineral blood hormones of Balinese cattle, to measure the content of the hormone progesterone in the blood of Balinese cattle using radioimmunoassay (RIA) technique. The results of the correlation analysis (Pearson Correlation, Kendall’s tau_b, and Spearman’s rho) obtained a relationship between the content of the hormone progesterone in the blood of cattle with the success of artificial insemination in cattle is very significant. The results of the correlation analysis (Pearson Correlation) obtained from the relationship between blood mineral content in the form of Zn, Se and Mg with the success of IB in cattle in the central cattle area of Jambi Province is very significant.
Differences of antibody titer to avian influenza and hematology profile on local ducks in Central Java
Authors: Ismoyowati  , Indrasanti D , Sulistyawan I H
Published: August 2019

Avian Influenza (AI) in poultry farms in Indonesia is still a threat to the sustainability of livestock and farmers. Duck is one of the most heterogeneous natural reservoirs and hosts of AI viruses. This study aims to detect antibody titer AI levels in blood serum and duck eggs as well as to know the different hematology profile of Tegal and Magelang ducks in Central Java. Research method was survey at farmer level. Farmer and duck samples were determined by purposive random sampling of 10 breeders for each region. Selection of respondents and ducks was based on the number of duck owners and duck age. The samples of farmers and ducks taken were determined randomly as many as 10 breeders in each area and from each breeder was selected 6 female ducks for their blood and 10 eggs to be analyzed using antibody titer against AI. The variables measured in this study were antibody titer against AI measured on blood serum and serum egg yolk, with inhibition hemagglutination test and haematological profile. The data obtained were analyzed using T-test. The results showed protective antibodies against AI on blood serum Tegal ducks (seropositive) 58% while Magelang ducks 46%. Titer of serum antibodies of Tegal duck in the range of 22-25 while Magelang ducks 22-26. Titer of egg antibody in Tegal ducks in the range of 20-210 while Magelang ducks 20-27. T-test on AI antibody titer on blood serum and serum of eggs of Tegal duck and Magelang ducks (which have different environment) showed no significant difference (P> 0.05). The result of T-test on leukocyte fraction profile showed that on heterophile, lymphocyte, and H / L both ducks showed a very significant difference (P <0.01). Higher H / L values in Tegal ducks show stress due to heat stress. T-test on red blood cells, white blood cells, hemoglobin, packed cell volume (PCV), total plasma proteins, eosinophils, monocytes, fibrinogen and albumin showed no significant difference (P> 0.05). The study concluded that there was no difference of antibody titer level to AI and hematology profile in Tegal and Magelang ducks despite different maintenance environment. However, Tegal duck was indicative of higher stress with higher H / L values than Magelang duck.
The effect of addition sweet orange essential oil and penicillin in tris yolk extender to Simmental liquid semen against percentage motility, viability and abnormalities of spermatozoa
Authors: Sitepu S A , Marisa J
Published: August 2019

One of the causes a poor quality of liquid semen is increasing bacterial growth. The addition of sweet orange essential oil and penicillin in Simmental liquid semen is expected to improve the quality of liquid semen because it contains antibacterial. The purpose of this research is to know the value of the percentage of motility, viability and spermatozoa abnormalities in Simmental liquid semen with an addition of combination penicillin with sweet orange essential oil on tris yolk extender. The research hypothesis is the addition of combination penicillin with sweet orange essential oil to tris yolk extender can increase the value of the percentage of motility, viability and spermatozoa abnormalities in Simmental liquid semen. Materials used in this study is the Simmental fresh semen, tris yolk extender, penicillin, and sweet orange essential oil. The experimental design used randomized design with 5 treatments and 5 replications. Treatment on the research is the addition of sweet orange essential oil 0%, 0.25%, 0.5%, 0.75% and 1%. The parameters observed were the evaluation of motility, viability and abnormality spermatozoa before equilibration and after equilibration. The results showed the best result was the addition of 1% sweet orange essential oil and the lowest on the addition of 0% sweet orange essential oil before and after equilibration.
Effect of using GnRH plus P4 and estradiol plus P4 on ovarian response of embryo production of local Pesisir Selatan cows in West Sumatera
Authors: Udin Zaituni , Hendri  , Masrizal  , Nanda Syafri
Published: August 2019

The objective of this study to evaluate the effect of GnRH plus P4 and estradiol plus P4 on superovulation responses and to know the relation between ovarian activity of local Pesisir Selatan cows. The data were obtained from 4 local Pesisir cows superovulated on breeding centre in west Sumatera. The treatment in superovulation was using GbRH plus P4 and estradiol plus P4 and data were analyzed using SPSS16 to determine theeffect of treatment on ovarian structure and the the regression correlation. The result showed that using GnRH plus P4 was greater ovulate rate, transferable embryos and lower the percentage of degerate and unfertize (P<0.05) than using estradiol plus P4. Linear regression between dominant follicle, thae number of CL and the number of embryos in coefficient correlation Rfcl=0.950; Rfe=0.829 and Rcle=0.980, respectively. In conclution the using of GnRH plus P4 for FTAI is greater the response in embryos production of local Pesisir Selatan cows.
Utilization of local feed to support new entrepreneur in poultry business
Authors: Adrizal Adrizal , Hellyward James , Yuzaria Dwi
Published: August 2019

Nowadays, Indonesian poultry business dominated by big enterprises like Charoen Phokpand Indonesia, Japfa Comfeed, Gold Coin etc. The enterprises depend on imported feedstuffs, so the feed price is very volatile because influenced by international trade and dollar value change. The condition cause the new entreprises difficult to survive, so that it will be reasonable for them to utilize local feed. The objectives of the research were utilization of local feedstuffs in ration formulation in order to minimize feed cost and ensure availability of feed continuously.
Fermentation characteristic with addition of Jengkol (Archidendron jiringa) peel powder on in vitro
Authors: Purnama Sari Desi , Sulaila  , Pabengsyah Putra Gustari Ade Ahmad Almas , Hibatullah M Rofid , Hidayah Nur
Published: August 2019

This study was aimed to utilize jengkol (Archidendron jiringa) peel as a natural feed additive for ruminant livestock. Jengkol (A. jiringa) peel has a good nutritional content and contains of bio-active compounds (tannin and saponin) that can be potential to increase the productivity of ruminant livestock. Tannin had the function to bind protein and decreased methanogen population, and saponin had used as defaunation agent to decreased the rumen protozoa population. The treatments were arranged in a randomized block design with 4 treatments (0%, 2%, 4%, 6%) and 4 replications. The variables observed included pH value, dry matter and organic matter digestibility, and NH3 concentration. Data were tested using Analysis of Variance (ANOVA) and the differences among treatments means were examined by Duncan Multiple Range Test. The results showed that the addition of Jengkol (A. jiringa) peel powder until 6% did not disturb (P> 0.05) pH value and digestibility (dry matter and organic matter digestibility), and strong significant (P <0.01) increased NH3 concentration. The research concluded that the addition of Jengkol (A. jiringa) peel powder had potency to increase livestock productivity because increased NH3 and did not disturb pH rumen, dry matter and organic matter digestibility.
Characteristics based of edible film made from whey with isolated lactic acid bacteria from tempoyak as probiotics packaging
Authors: Juliyarsi Indri , Arief  , Djamaan Akmal , Purwati Endang
Published: August 2019

Edible film made from whey, a waste obtained from milk and used as primary packaging. This research aimed at isolated and identification of lactic acid bacteria derived from tempoyak, subsequently applied in the manufacture of edible film and have the properties of probiotics. Physical properties measured from the edible film are moisture content, pH, solubility and the thickness of the time. This research uses material from waste milk whey and tempoyak. The method used is an experiment using a random design group that consists of four isolates tempoyak addition, treatment A (0%), B (4%), C (8%), into a solution of whey and six replicates. Treatment results show to a thickness ranging from 0.20-0.25 mm and already meet the standards JIS 1975.
Profit analysis of broiler chicken business in Beringin Village, STM Hilir District, Deli Serdang Regency
Authors: Marisa J , Sitepu S A
Published: August 2019

The purpose of this study was to analyze the benefits received by broiler chicken farmers in Beringin Village, STM Hilir Subdistrict, Deli Serdang District. The type of research is descriptive quantitative research, which is the researcher who describes the condition of the variable, namely the amount of income obtained by broiler chicken businessmen. The population in this study were farmers of broiler chickens in Beringin Village, STM Hilir Subdistrict. The analysis method used is income analysis and business feasibility analysis. The results showed that broiler chickens in Beringin Village, STM Hilir Subdistrict, Deli Serdang District, were feasible to be developed economically with the highest profit generated by respondents 5 of IDR 12,300,000, - and the lowest in respondent 5 is IDR 27,320,125 per period with an average profit of IDR 101,758,063 per period / cycle.
Key technology and equipment for local heating roll-forming of high strength square tube
Authors: Peng Xue-Feng , Han Jing-Tao , Dai Zong-Miao
Published: August 2019

The application of advanced high strength steel and the development innovation manufacturing technology is an effective way to realize the automobile lightweight and improve the safety performance design of high strength steel products. In this paper, a local heating “square to square” roll-forming process was proposed to solve the difficult problems of the introducing high strength steel into the traditional roll-forming equipment. Two kinds of inductors structure were compared and analyzed. Based on the “round to square” process, the size design of the rollers in forming process was deduced by the mutual relationship of the angle. And the relationship between the frame layout was given. The calculation of example and the key technical equipment were completed. Based on this new technology, the performance test of high strength tubes was carried out. It was found that the mechanical properties of the corner and the dimensional accuracy of the section are significantly improved. The research shows that this key technology and equipment of hot roll-forming can effectively overcome the problems of high strength steel.
Uncertainty Measurement and Analysis for Quality and Reliability in Manufacturing Process
Authors: Ahmed Altaf , Guozhu Jia , Majeed Arfan , Salam Abdus
Published: August 2019

The variation and uncertainty existed in every process and considered as an essential element in precise, accurate and high-quality manufacturing, especially in the Industry 4.0 era. Manufacturing quality and reliability is affected by variations and uncertainties in different process parameters and influencing factors. The variations and uncertainties are considered very critical in measurement and monitoring process, i.e., prediction or prognostics. These variations and subsequent uncertainties are needed to be identified, quantified, analyzed and controlled. This paper presents an approach to uncertainty measurement and analysis in manufacturing. The key characteristic parameter is identified which is critical for final product quality and reliability. To determine the uncertainty in the specific parameter, the uncertainty factors of both the manufacturing process and measurement process are determined. The combined uncertainty is determined by considering the influencing factors both in manufacturing and measurement process. The relation of each factor to the key parameter is analyzed and the sensitivity coefficient is determined mathematically or experimentally. The combined and expanded uncertainty is determined considering all related factors. The proposed approach has been applied to an additive manufacturing technique, and useful results are achieved.
A Calculation Method for Dressing Amount of Monolayer Electroplated Grinding Wheel Based on Zernike Moment
Authors: Bin Li , Shuai Wang , Hua Bao , Xiaoqiang Chen
Published: August 2019

Aiming at the difficulties in accurate prediction of the dressing amount of monolayer electroplated grinding wheel, a new calculation method based on image processing was proposed. For the purpose of increasing the measurement precision, all images were captured by CCD camera and a sub-pixel level accuracy edge detection approach based on Zernike moment was used. Two dressing amount of electroplated grinding wheel were calculated by protrusion height and run-out respectively, and the larger number of them was chosen as the optimal dressing amount. Finally, this method is applied to calculate the optimal dressing amount of 30 gothic-arc profile electroplated grinding wheels, and they were dressed by optical contour grinder. The results showed that, form precision of grinding wheels and roughness of workpiece were fine.
FSI simulation and experimental validation of nonlinear dynamic characteristics of a gas-pressurized hydraulic shock absorber
Authors: Xu Wen-Xue , Lü Zhen-Hua , Zhou Ping-Zhang
Published: August 2019

The structure, fluid and gas dynamic models of a gas-pressured hydraulic shock absorber are established to form a 3-D FSI (Fluid-Structure Interaction) simulation model, which can be used to predict the working characteristics and kinematical responses of the valve plates, as well as the flow characteristics, transient fluid pressure and velocity distribution of the shock absorbers. The working characteristics obtained from the simulation model are compared with the experimental results to prove the effectiveness of the simulation model. It is shown that the dynamic characteristics of the shock absorber can be predicted quite accurately by the 3-D FSI simulation model, which is meaningful to the understanding of the inner working mechanism of the shock absorber system.
A dichotomy concerning uniform boundedness of Riesz transforms on Riemannian manifolds
Authors: Amenta Alex , Tolomeo Leonardo
Published: August 2019

Given a sequence of complete Riemannian manifolds

(

M
n

)

(M_n)

of the same dimension, we construct a complete Riemannian manifold

M
M

such that for all

p
∈
(
1
,
∞
)

p \in (1,\infty )

the

L
p

L^p

-norm of the Riesz transform on

M
M

dominates the

L
p

L^p

-norm of the Riesz transform on

M
n

M_n

for all

n
n

. Thus we establish the following dichotomy: given

p
p

and

d
d

, either there is a uniform

L
p

L^p

bound on the Riesz transform over all complete

d
d

-dimensional Riemannian manifolds, or there exists a complete Riemannian manifold with Riesz transform unbounded on 

L
p

L^p

.
Conserved NDR/LATS kinase controls RAS GTPase activity to regulate cell growth and chronological lifespan
Authors: Chen Chuan , Rodriguez Pino Marbelys , Haller Patrick Roman , Verde Fulvia
Published: August 2019

Adaptation to the nutritional environment is critical for all cells. RAS GTPase is a highly conserved GTP-binding protein with crucial functions for cell growth and differentiation in response to environmental conditions. Here, we describe a novel mechanism connecting RAS GTPase to nutrient availability in fission yeast. We report that the conserved NDR/LATS kinase Orb6 responds to nutritional cues and regulates Ras1 GTPase activity. Orb6 increases the protein levels of an Ras1 GTPase activator, the guanine nucleotide exchange factor Efc25, by phosphorylating Sts5, a protein bound to efc25 mRNA. By manipulating the extent of Orb6-mediated Sts5 assembly into RNP granules, we can modulate Efc25 protein levels, Ras1 GTPase activity, and, as a result, cell growth and cell survival. Thus, we conclude that the Orb6–Sts5–Ras1 regulatory axis plays a crucial role in promoting cell adaptation, balancing the opposing demands of promoting cell growth and extending chronological lifespan.
Association of Sleep Duration and Blood Pressure in Adolescents: A Multicenter Study
Authors: Dos Santos Emanuela De Souza Gomes , De Souza Orivaldo Florencio
Published: August 2019

BACKGROUND

Evidence suggests that sleep duration is related to blood pressure (BP), but the findings are still inconsistent for adolescents.

OBJECTIVE

To analyze the association between sleep duration and BP in Brazilian adolescents between 12 and 17 years of age.

METHODS

This study is part of the Study of Cardiovascular Risk in Adolescents (ERICA), a multicenter, school-based, cross-sectional study in 273 municipalities in Brazil. The sample consisted of 65,643 adolescents. Sleep duration was measured by a subjective method, and BP was measured by the oscillometric method. Multiple linear regression analyses were performed to evaluate the association between sleep duration and BP.

RESULTS

The mean sleep duration was 8.14 hours (± 1.40), with significant difference between the groups according to BP levels (P < 0.0001). The mean systolic and diastolic BP were 110.59 (± 11.87) and 65.85 (± 7.94) mm Hg, respectively, in the group of adolescents. Sleep duration was significantly associated with BP. Each increase 1 hour in sleep was associated with BP reduction in both sexes combined (P < 0.0001). Considering the effects of covariates, each increase 1 hour in sleep was associated with systolic BP (SBP) reduction among boys (P = 0.004) and SBP elevation among girls (P = 0.009), after full adjustment.

CONCLUSION

The results suggest that each increase in sleep duration was associated with SBP elevation among girls. Such findings may have important implications for cardiovascular health in adolescence.
Fast exact conformalization of the lasso using piecewise linear homotopy
Authors: Lei J
Published: August 2019

Conformal prediction is a general method that converts almost any point predictor to a prediction set. The resulting set retains the good statistical properties of the original estimator under standard assumptions, and guarantees valid average coverage even when the model is mis-specified. A main challenge in applying conformal prediction in modern applications is efficient computation, as it generally requires an exhaustive search over the entire output space. In this paper we develop an exact and computationally efficient conformalization of the lasso and elastic net. The method makes use of a novel piecewise linear homotopy of the lasso solution under perturbation of a single input sample point. As a by-product, we provide a simpler and better-justified online lasso algorithm, which may be of independent interest. Our derivation also reveals an interesting accuracy-stability trade-off in conformal inference, which is analogous to the bias-variance trade-off in traditional parameter estimation. The practical performance of the new algorithm is demonstrated in both synthetic and real data examples.
Zebrafish studies identify serotonin receptors mediating antiepileptic activity in Dravet syndrome
Authors: Griffin Aliesha L , Jaishankar Priyadarshini , Grandjean Jean-Marc , Olson Steven H , Renslo Adam R , Baraban Scott C
Published: August 2019

Dravet syndrome is a life-threatening early-onset epilepsy not well controlled by antiepileptic drugs. Drugs that modulate serotonin (5-HT) signalling, including clemizole, locaserin, trazodone and fenfluramine, have recently emerged as potential treatment options for Dravet syndrome. To investigate the serotonin receptors that could moderate this antiepileptic activity, we designed and synthesized 28 novel analogues of clemizole, obtained receptor binding affinity profiles, and performed in vivo screening in a scn1lab mutant zebrafish (Danio rerio) model which recapitulates critical clinical features of Dravet syndrome. We discovered three clemizole analogues with 5-HT receptor binding that exert powerful antiepileptic activity. Based on structure–activity relationships and medicinal chemistry-based analysis, we then screened an additional set of known 5-HT receptor specific drug candidates. Integrating our in vitro and in vivo data implicates 5-HT2B receptors as a critical mediator in the mechanism of seizure suppression observed in Dravet syndrome patients treated with 5-HT modulating drugs.
Distance and proximity in Hubert Robert
Authors: Jones Nathaniel B , Ryu Sara
Published: August 2019

This essay focuses on questions of distance and proximity, both chronological and spatial, in the painting of eighteenth-century French artist Hubert Robert. It argues that, through the manipulation of different modes of distance in his paintings, Robert sought to articulate an aesthetic attitude which highlighted the remoteness of the past at the same time as he brought it into dialogue with the present. This aesthetic of distance is variously enacted by Robert's pictorial reflections on the ancient Roman system of roads, the virtual creation and collection of antiquities, and the actual movement of the physical remnants of the ancient world. The result, the essay suggests, is that Robert's work straddles the border of fiction and reference to both acknowledge and deny the presentness of the past.
Mobilizing Pompeii for Italian Silent Cinema
Authors: Wyke Maria
Published: August 2019

A documentary film about the eruption of Vesuvius in 1906 juxtaposes scenes of the damage and deaths it caused in neighbouring communities with shots of Pompeii — the ancient city of the long-since dead. The documentary suggests that Pompeii is a picturesque site where the privileged tourist experiences aesthetic detachment from the excavators’ labour or the locals’ suffering. Despite this critique, four Italian fiction films about the last days of Pompeii were made between 1908 and 1926. This article explores those films and argues that they mobilize Pompeii both for modern Italians and for cinema. They situate viewers immersively within the reconstructed city and substitute for a detached tourist gaze an impassioned, participatory one.