bluuebunny/crossref_metadata_2025 huggingface dataset:
Algorithm for solution of multicriterion problem of production planning of pipes and shaped products
Authors: Zakharchenkov K. V. , Mrochek Zh. A. , Mrochek T. V.
Published: April 2019

One of the modern directions of increase in economic efficiency of the enterprise is a production planning automation, including the automated scheduling of production. Introduction of ready program solutions for automated preparation of production schedules (APS, MES-systems) at enterprises is constrained by the complexity and high cost of adapting to the specific conditions of the enterprise, implementation and maintenance. The complexity of the problem is determined by a large number of product names, rapid changes in the operational environment and the need for clear interaction with the warehouse. The task is multicriterion as it is necessary to provide the maximum loading of each production line with a minimum of readjustments, and at the same time the schedule must comply with the terms of shipment of products, taking into account the availability of raw materials for production. Therefore, the authors have developed an algorithm and software that allow for an acceptable time to make an admissible, often optimal schedule for the production of preinsulated pipes and shaped products in batches with the individual completion of consistent service, taking into account production and technological limitations in SMITH-Yartsevo, Ltd (Russia). In this case, each group of products is divided into batches in accordance with the McNaughton rule (wrap around rule), and the resulting batches are distributed along the production lines. For the choice of the optimal schedule it is necessary to make several schedules with different values of the number of readjustments and select the one that best meets the criteria of the task.
Género, empreendedorismo e autonomização profissional
Authors: Brandão Ana Maria , Marques Ana Paula , Lamela Rita
Published: April 2019

Os estudos sobre empreendedorismo mostram a persistência de desigualdades de género decorrentes de condições estruturais distintas que operam em desfavor das mulheres. Neste artigo, analisam-se as escolhas de projetos autónomos de carreira de jovens diplomados/as do ensino superior, destacando-se os perfis de “empreendedor tradicional” e “empreendedor inovador”. No primeiro, concentram-se mais mulheres em serviços de proximidade e de cuidado e, no segundo, mais homens em setores inovadores e intensivos em conhecimento. Os resultados sugerem a necessidade de uma discussão ampla sobre autonomização económica das mulheres e políticas de promoção do empreendedorismo que atendam às especificidades de género e sua relação com ensino superior.
E-fulfillment: O caso da Empresa Brasileira de Correios e Telégrafos
Authors: Leite Ana Caroline Nascimento , Guarnieri Patricia , Filippi Amanda Cristina Gaban
Published: April 2019

O objetivo desse trabalho foi verificar os fatores preponderantes na decisão de contratação do serviço Correios Log+ sob a ótica dos empresários de e-commerce. Para tanto, foi realizado um estudo aplicado, qualitativo e documental, através de estudo de caso e entrevista semi estruturadas a seis empresas de pequeno porte, clientes do serviço Correios Log+ no estado de São Paulo. Os resultados evidenciam que dificilmente um comércio eletrônico é bem sucedido sem um serviço de e-fulfillment bem estruturado. Diversos motivos levam as empresas a terceirizar o e-fulfillment, o mais comum é a intenção em concentrar os esforços na atividade principal. Para investigações futuras, sugere-se o desenvolvimento de estudos para ampliar as discussões científicas e gerenciais neste campo de conhecimento, o qual é restrito.
Dynamic Modeling of Two-Phase Gas/Liquid Flow in Pipelines
Authors: Meziou Amine , Khan Zurwa , Wassar Taoufik , Franchek Matthew A. , Tafreshi Reza , Grigoriadis Karolos
Published: April 2019

Presented is a reduced–order thermal fluid dynamic model for gas/liquid two–phase flow in pipelines. Specifically, a two–phase–flow thermal model is coupled with a two–phase–flow hydraulics model to estimate the gas and liquid properties at each pressure and temperature condition. The proposed thermal model estimates the heat–transfer coefficient for different flow patterns observed in two–phase flow. For distributed flows, where the two phases are well–mixed, a weight–based averaging is used to estimate the equivalent fluid thermal properties and the overall heat–transfer coefficient. Conversely, for segregated flows, where the two phases are separated by a distinct interface, the overall heat–transfer coefficient is dependent on the liquid holdup and pressure drop estimated by the fluid model. Intermittent flows are considered as a combination of distributed and segregated flow. The integrated model is developed by dividing the pipeline into segments. Equivalent fluid properties are identified for each segment to schedule the coefficients of a modal approximation of the transient single–phase–flow pipeline–distributed–parameter model to obtain dynamic pressure and flow rate, which are used to estimate the transient temperature response. The resulting model enables a computationally efficient estimation of the pipeline–mixture pressure, temperature, two–phase–flow pattern, and liquid holdup. Such a model has utility for flow–assurance studies and real–time flow–condition monitoring. A sensitivity analysis is presented to estimate the effect of model parameters on the pipeline–mixture dynamic response. The model predictions of mixture pressure and temperature are compared with an experimental data set and OLGA (2014) simulations to assess model accuracy.
Effect of Stress-Sensitive Fracture Conductivity on Transient Pressure Behavior for a Horizontal Well With Multistage Fractures
Authors: Jiang Liwu , Liu Tongjing , Yang Daoyong
Published: April 2019

In this study, theoretical models have been formulated, validated, and applied to evaluate the transient pressure behavior of a horizontal well with multiple fractures in a tight formation by taking stress-sensitive fracture conductivity into account. On the basis of the superposition principle in the Laplace domain, we propose a coupled matrix/fracture-flow model with consideration of the stress-sensitivity effect in fractures, which strengthens the nonlinearity of the governing equations. More specifically, a new slab-source function in the Laplace domain was developed to describe the transient pressure responses caused by fluid flow from the matrix to the fracture, and a new solution was derived to describe the fluid flow in the fracture under the stress-sensitivity effect. Subsequently, a semianalytical method was applied by discretizing each hydraulic fracture into small segments, and a linearization scheme and an iteration method are adopted to deal with the nonlinear problem in the Laplace domain. Meanwhile, a modified superposition principle was proposed and applied to generate the pressure distributions for buildup tests with consideration of stress-sensitive fracture conductivity. Furthermore, pressure responses and their corresponding derivative type curves were generated to examine the effect of stress-sensitive conductivity. For pressure-drawdown tests, it is found that gradual increases in both pressure drop and pressure derivative occur over time because of the partial closure of the fractures. The stress-sensitivity effect in fractures becomes more evident with a smaller fracture conductivity and a larger fracture-permeability modulus. From the pressure-buildup curves, a one-fourth-slope line characteristic of the bilinear-flow period and constant derivatives of 0.5 representing a pseudoradial-flow regime can be clearly observed. Only fracture conductivity near the wellbore at the shut-in time can be estimated from the buildup pressures obtained in this work, whereas pressure-buildup analysis derived from the traditional superposition principle will result in an erroneous evaluation of the stress-sensitive fracture conductivity. It is also found that the effect of permeability hysteresis in the fractures has a negligible impact on the pressure-buildup responses.
Continuous noninvasive hemoglobin monitoring estimates timing for detecting anemia better than clinicians: A randomized controlled trial
Authors: Tang Bo , Yu Xuerong , Xu Li , Zhu Afang , Zhang Yuelun , Huang Yuguang
Published: April 2019

Background
Hemoglobin measurement is important for transfusion decision-making. Pulse CO-Oximetry provides real-time continuous hemoglobin (SpHb) monitoring. The triage role of SpHb trends based on hemoglobin measurements was investigated.
Methods
In this diagnostic randomized controlled trial, 69 patients undergoing spine or cytoreductive surgery were randomly enrolled into SpHb-monitoring and standard-care groups. Diagnostic blood samples were drawn for CO-oximetry Hb (CoOxHb) when the SpHb decreased by 1 g/dl or at the clinician’s discretion in the standard-care group. The positive predictive value (PPV) was defined as the ability to detect a decrease in CoOxHb > 1 g/dl or a CoOxHb < 10 g/dl; the PPVs were compared using Fisher’s exact test. The SpHb and trend accuracies were calculated. The transfusion units and postoperative hemoglobin levels were compared.
Results
The PPV of a decrease in CoOxHb > 1 g/dl was 93.3% in the SpHb group vs 54.5% without SpHb monitoring (p = 0.002). The PPV of CoOxHb < 10 g/dl was 86.7% vs. 50.0% for these groups (p = 0.015). The CoOxHb was never < 7 g/dl with SpHb monitoring. Sixty SpHb–CoOxHb data pairs and 28 delta pairs (ΔSpHb-ΔCoOxHb) were collected. The bias, precision and limits of agreement were -0.29, 1.03 and -2.30 to 1.72 g/dl, respectively. When ΔSpHb and ΔCoOxHb were > 1 g/dl, the concordance rate for changes in hemoglobin reached 100%. The delta pairs revealed a positive correlation [ΔSpHb = 0.49 * ΔCoOxHb - 0.13; r = 0.69, 95% confidence interval (0.53, 0.82)]. No significant differences were found in the transfusion volume or postoperative anemia state.
Conclusions
The SpHb trend tracked changes in hemoglobin satisfactorily during surgery and more accurately estimated the appropriate timing for invasive hemoglobin measurements than the clinicians.
Trial Registration
ChiCTR1800016290, Date of registration 24 May 2018.
High rates of culture conversion and low loss to follow-up in MDR-TB patients managed at Regional Referral Hospitals in Uganda
Authors: Mbonye Martin Kayitale , Otuba John-Paul , Riese Sara , Alima Hilary , Mugabe Frank , Muhwezi Augustin K , Turyahabwe Stavia , Wandera Christopher , Zanten Tisna Veldhuijzen van , Tugume Gladys
Published: April 2019

Background: Multi-drug resistant – tuberculosis (MDR-TB) is an emerging public health concern in Uganda, with only just over 200 new cases notified by 2014. Prior to 2013, MDR-TB treatment in Uganda was only being provided at the national referral hospital and two private-not-for profit clinics. From 2013, MDR-TB treatment was scaled up to seven regional referral hospitals (RRH). We analyzed data on the first cohort of patients started on MDR-TB treatment at the seven RRH.
Methods: This study was a retrospective descriptive analysis of data collected on a cohort of 69 patients started on MDR-TB treatment at 7 RRHs between 1st April 2013 and 30th June 2014.

Results: Of the 69 patients, 21 (30.4%) were female and 39 (56.5%) were HIV-negative. Thirty (43.5%) were resistant to both isoniazid and rifampicin and 57 (82.6%) were category 1 or 2 failures. Median age at the start of MDR-TB treatment was 35 years (SD 13.5), mean time-to-treatment initiation was 96.1 days and out of the 30 HIV-positive patients, 27 (90.0%) were on anti-retroviral treatment with a mean CD4 count of 258. Within six months of treatment, 59 (86.0%) patients’ culture converted, of which 45 (65.2%) converted by the second month and 14 (20.3%) by the sixth month, one (1.5%) did not culture convert, three (4.4%) died and six (8.8%) were lost-to-follow up. Thirty-two (46.4%) patients experienced at least one severe drug adverse event, while 40 (67.8%) gained weight (mean 4.7 kilograms).

Conclusions: Despite MDR-TB treatment initiation delays, most patients culture converted early, while few were lost to follow-up. These interim outcomes indicate a successful scale-up of MDR-TB treatment at RRH. Reasons for the high proportion of HIV-negative patients on MDR-TB treatment should be investigated.
HetEnc: A Deep Learning Predictive Model for Multi-type Biological Dataset
Authors: Wu Leihong , Liu Xiangwen , Xu Joshua
Published: April 2019

Motivation

Researchers today are generating unprecedented amounts of biological data. One trend in current biological research is integrated analysis with multi-platform data. Effective integration of multi-platform data into the solution of a single or multi-task classification problem; however, is critical and challenging. In this study, we proposed HetEnc, a novel deep learning-based approach, for information domain separation.

Results

HetEnc includes both an unsupervised feature representation module and a supervised neural network module to handle multi-platform gene expression datasets. It first constructs three different encoding networks to represent the original gene expression data using high-level abstracted features. A six-layer fully-connected feed-forward neural network is then trained using these abstracted features for each targeted endpoint. We applied HetEnc to the SEQC neuroblastoma dataset to demonstrate that it outperforms other machine learning approaches. Although we used multi-platform data in feature abstraction and model training, HetEnc does not need multi-platform data for prediction, enabling a broader application of the trained model by reducing the cost of gene expression profiling for new samples to a single platform. Thus, HetEnc provides a new solution to integrated gene expression analysis, accelerating modern biological research.

Availability and Implementation

The source code for HetEnc is available at: https://github.com/seldas/HetEnc_Code.
Door to needle time for thrombolysis: A secondary analysis of the TIPS cluster randomized controlled trial
Authors: Hasnain Md , Paul Christine L , Attia John R , Ryan Annika , Kerr Erin , D’Este Catherine A , Hall Alix , Milton Abul Hasnat , Hubbard Isobel , Levi Christopher R
Published: April 2019

Background

The Thrombolysis ImPlementation in Stroke (TIPS) study evaluated a hospital-based intervention aimed at improving the rates of intravenous thrombolysis in Australia. The current study assessed the effects of this intervention on the door-to-needle time for intravenous thrombolysis and also determined the intervention effects on door-to-needle time within metropolitan and non-metropolitan hospital locations.

Methods

TIPS was a clustered randomized controlled trial that involved 20 hospitals in Australia, with 10 hospitals receiving a multi-component practice-change intervention. De-identified patient data collected in the trial included the arrival, assessment, and treatment times for acute ischemic stroke patients. A posthoc exploration using mixed-effects regression modelling was used to assess intervention effects on door-to-needle time, and the effects within hospital location (metropolitan versus non-metropolitan).

Results

The intervention vs. control difference in the door-to-needle times was non-significant overall or within a hospital location. To provide additional context for the findings, we also evaluated the results within each intervention hospitals. During the active-intervention period, the intervention hospitals showed a significant decrease in the door-to-needle time of 9.25 minutes (95%CI: -16.93, -1.57), but during the post-intervention period, the result was not significant. During the active intervention period, control hospitals showed a significant decrease in the door-to-needle time of 5.26 minutes (95% CI: -8.37; -2.14) and during the post-intervention period, the decrease was 12.13 minutes (95%CI: -17.44, -6.81).

Conclusion

Across these primary stroke care centres in Australia, a secular trend towards shorter door-to-needle times across both intervention and control hospitals was evident. The intervention resulted in only a modest but significant reduction within experimental groups during the active intervention period, which was not sustained during the post-intervention period.
Illness and treatment perceptions of patients with epilepsy attending their treatment at tertiary hospital in Addis Ababa, Ethiopia–a qualitative exploration
Authors: Demissie Bezawit Negash , Mengesha Abenet Tafesse , Habte Bruck Messele
Published: April 2019

Background

Epilepsy can be a large economic burden in countries where appropriate treatment is not taken due to religious and psychosocial beliefs.

Objective

To explore the perceptions and experiences of patients with epilepsy attending their treatment at Tikur Anebessa Specialized Hospital about their illness and treatment.

Methods

A qualitative exploratory design with an in-depth interview with fourteen purposively selected patients was used until saturation of key emerging themes was achieved.

Result

The finding showed that study participants experienced delay in treatment-seeking and non-adherence to recommended treatment regimens and as well use of traditional medicine and spiritual healing. Some of the possible reasons for their reported behaviors include alternative perceptions that they have about their illness, social and psychological issues that they face, concerns about their medications alongside with dissatisfaction with their healthcare providers. On the other hand, reasons that were reported to positively influence their treatment experiences include necessity perceptions about their medications, family support and use of spiritual healing alongside their biomedical treatment.

Conclusion

The healthcare provision should improve to cater to these groups of patients including instituting chronic care management and appropriate health education provision.
The use and trend of emotional language in the banks’ annual reports: the state of the global financial crisis
Authors: A. H. Elamir Elsayed , A. Mousa Gehan
Published: April 2019

This study is of an exploratory nature as it seeks to explore the extent to which the language of emotions in the banks’ annual reports is affected by the global financial crisis (GFC). The language of emotions was analyzed using eight categories (trust, anticipation, sadness, anger, fear, disgust, surprise and joy) in annual reports of 12 listed banks from six countries in the Middle East area (namely, Jordan, Kingdom of Bahrain, United Arab Emirates, Sultanate of Oman, Kuwait, Kingdom of Saudi Arabia) from 2002 to 2017. The final data set consists of 192 bank-year observations. The study time was divided into three periods (pre, during and post GFC). In addition, the study enriches accounting literature by being the first study to test Pollyanna hypothesis using emotion analysis. The results of the study show that the percentage of emotional words in banks’ annual reports (2002–2017) represents almost 22% on average. The trust, anticipation and fear categories were the most affected than other emotional categories during GFC. While the trust category decreased, both the fear and anticipation categories increased. Other findings of the study show that regardless of GFC, emotional words of trust and anticipation categories in banks’ annual reports have dominated the emotional words of the disgust and surprise categories. Therefore, Pollyanna hypothesis is supported. In contrast to the emotional words of the joy category in banks’ annual reports which has not dominated the sadness category. In this case, Pollyanna hypothesis is rejected.
Impact of transport infrastructure on firm performance: case study of Cuu long delta area, Vietnam
Authors: Vinh Tuong Phi , Thai Binh Dang , Dinh Hoa Nguyen
Published: April 2019

Transport infrastructure plays an important role in promoting the socio-economic development in most countries. In particular, the development of road infrastructure is the basis for promoting enterprises development through expanding market access, lowering logistics cost and inputs cost, etc. The focal point of this paper is to estimate the impact of road infrastructure on firm performance through an empirical research in Cuu Long delta area, Vietnam. By applying the econometric models, the results from this study show that the positive relationship between road infrastructure and firm performance in Cuu Long delta area, and that the level of impact is different across business sectors.
Occurrence of microplastic fragments in the Pasig River
Authors: Deocaris Chester C. , Allosada Jayson O. , Ardiente Lorraine T. , Bitang Louie Glenn G. , Dulohan Christine L. , Lapuz John Kenneth I. , Padilla Lyra M. , Ramos Vincent Paulo , Padolina Jan Bernel P.
Published: April 2019

Microplastics are plastic fragments with dimensions of less than 5 mm. These materials are formed within bodies of water by the forces shearing on the large plastics. Ultraviolet light from sunlight also degrades plastic materials causing discoloration and disintegration into smaller, micro- or even nano-sized particles. This study reports the isolation of microplastic fragments from the Pasig River within the vicinity of the Polytechnic University of the Philippines. The collection of floating particulates was done by sieving the river water (flow rate = 0.31 m s−1) through a 0.35 mm mesh for 10 minutes. Through this method, 25.7 m3 of river water was sieved over three samplings. Microplastics were isolated through a series of peroxide oxidation and sedimentation methods. All microplastic fragments were viewed and photographed under a compound microscope (40–100× magnification). A total of 34 microplastic fragments with lengths ranging from 0.56 to 4.58 mm were categorized. Microplastic fragments were categorized into two categories: small (1.16 ± 0.42 mm) and large (4.13 ± 0.37 mm), based on the size distribution. The microplastic fragments isolated were partially rounded and some showed signs of discoloration indicating mechanical and photo-degradation. The presence of microplastic fragments in Pasig River indicates persistent plastic pollution from the river source (Laguna de Bay), its tributaries, as well as the communities and industries situated along the river. Programs on solid waste management especially on plastic wastes could mitigate the production of microplastics in the river.
Review of global and China's policies on fish passages
Authors: Chen Ang , Wen Jingya , Wu Miao , Wang Pengyuan
Published: April 2019

Fish migrate up and down streams for reproduction in both sea and freshwater ecosystems over their life cycle. Over the last decades, fish passages have been provided to mitigate the adverse impacts induced by barriers. However, what is the proper type of fish passage and how to guarantee the effectiveness of operation are still under discussion. In this paper, global and China's policies on fish passages are reviewed. The development and main contents of relevant instruments are analyzed. The similarities and differences between China and foreign countries are compared, and issues in the fish protection and fish passages' management in China are identified. The results show that global policies on fish passages varied from local governments to continents. The design, operation, and management of fish passages are popular throughout the world. Duplication of authorities' responsibilities is the most critical issue in China. The paper recommends implementing a plan of environmental protection at watershed scale, and strengthening the monitoring of fish passages' operation and management. Further development directions of policies on fish passages' management have been proposed. The paper may help facilitate national policies on fish passages by integrating the effective measures of global experience.
Removal of lead ions from water by capacitive deionization electrode materials derived from chicken feathers
Authors: Alfredy T. , Jande Y. A. C. , Pogrebnaya T.
Published: April 2019

Capacitive deionization (CDI) is a promising and rapidly growing technology for water treatment and the electrode materials play a key role in improving CDI performance. In this study, high surface area activated carbon was prepared from chicken feather (CF) bio-waste through pyrolysis and KOH activation; the KOH:CF ratio (R) and activation temperature (Ta) were variable parameters. The material was characterized by using the Brunauer, Emmett and Teller (BET) method, Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The lead (Pb2+) removal test was performed with a CDI cell containing the fabricated carbon electrode and 100 mg L−1 Pb(NO3)2 solution; the sample prepared with the ratio R of 1:1 and Ta = 800 °C exhibited higher Pb2+ removal efficiency of 81% and electro sorption capacity of 4.1 mg g−1 at the electrode potential 1.2 V and flow rate 5 mL min−1. Therefore, CF-derived carbon is considered as a promising CDI electrode material for removal of heavy metals from waste water.
An MLP-ANN-based approach for assessing nitrate contamination
Authors: Foddis Maria Laura , Montisci Augusto , Trabelsi Fatma , Uras Gabriele
Published: April 2019

This paper investigates the feasibility of predicting nitrate contamination from agricultural sources using multi-layer perceptron artificial neural networks (MLP-ANNs). The approach consists in training an MLP-ANN to predict nitrate concentrations based on a set of indirect measurements, such as pH, electrical conductivity, temperature and groundwater level. These are simpler and more economical than direct measurements, and they can be continuously collected on-site, rather than by performing laboratory tests. The approach has been validated in the nitrate vulnerable zone of the Arborea plain (central western Sardinia, Italy) by comparing the results obtained with different MLP-ANN models in order to find the most efficient model. The results show that the MLP-ANN-based model is a time- and cost-efficient method for predicting nitrate concentration.
Challenges and opportunities for a successful mining industry in the future
Authors: Mateus António , Martins Luís
Published: April 2019

Modern models of sustainable economic growth are metal-intensive and will not be successful in the future unless a continuous supply of mineral-derived products is ensured. Despite this being logical, there is still a significant reluctance regarding mineral exploration and mining activities, often reflected in: (i) unfavourable public opinions; and (ii) absence of political measures or continuity of agendas that actually appreciate the way minerals are produced and the players directly or indirectly involved in this production. To succeed, the mining industry will have to (re)define its strategy and find innovative approaches to old problems and clearly demonstrate that mineral products can be efficiently delivered to support global development and assist suitable paths to welfare and quality of life, thus also providing real value to all concerned. In this study we give a concise review of the main challenges posed to the mining industry, and also indicate the most relevant opportunities and advance some proposals to constructively face the identified weaknesses and threats. The fundamental outcome is that the long-term balance between supply and demand of mineral products requires concerted actions on different fronts aiming: (i) the safeguarding of known resources; (ii) high-quality (scientifically and technologically driven) exploration surveys; (iii) improvements in mining and  mineral transformation / beneficiation; (iv) advances in consistent combinations of primary and secondary sources of raw materials, along with higher concerns on their judicious use; (v) effective and stable mining policies; and (vi) new insights on the role played by the mining industry through fruitful  dialogues with society in general.
Biodiesel Production from Insects: From Organic Waste to Renewable Energy
Authors: Nguyen Hoang Chinh , Nguyen Ngoc Tuan , Su Chia-Hung , Wang Fu-Ming , Tran Tuyet Nhung , Liao Ying-Tzu , Liang Shih-Hsiang
Published: April 2019

The conversion of organic wastes into biodiesel has become an attractive solution
to address waste surplus problems and energy depletion. Oleaginous insects can degrade
various organic wastes to accumulate fat-based biomass, thus serving as a potential
feedstock for biodiesel production. Therefore, the use of insects fed on organic waste for
biodiesel production has increasingly attracted considerable investigations. In recent
years, different insect species have been studied for their efficiency in converting various
organic wastes and for producing biodiesel from their fat. Several methods have been developed
for biodiesel production from insects to improve yields and reduce production
costs and environmental impacts. This review summarizes the latest findings of the use of
insects for converting organic wastes into biodiesel. The production processes and fuel
properties of biodiesel produced from insects are also discussed.
Performance Comparison of Three Different Controllers of Proton Exchange Membrane Fuel Cell
Authors: Fan Liping , Li Chong , Boshnakov Kosta
Published: April 2019

Proton exchange membrane fuel cells (PEMFCs) are promising clear and efficient new energy sources. An excellent
control system is a normal working prerequisite for maintaining a fuel cell system in correct operating conditions.
Conventional controllers could not satisfy the high performance to obtain the acceptable responses because of uncertainty,
time-change, nonlinear, long-hysteresis and strong-coupling characteristics of PEMFCs. Based on the dynamic model of
PEMFC, an adaptive fuzzy sliding mode controller is proposed for PEMFC to realize constant voltage output and reliability
service. Three different controllers, including fuzzy controller, fuzzy sliding mode controller and adaptive fuzzy sliding
mode controller, are designed and compared. Simulation results show that the proposed adaptive fuzzy sliding mode
controller for PEMFC can get satisfactory controlling effects.
Potato and tomato peel extract – A natural antioxidant for retarding lipid peroxidation in lamb meat (Awassi) refrigerator storage
Authors: Alaa Almasri q , Abdulhakim Azizieh , Rawaa Tlay
Published: April 2019

This work examined the utilization of potato and tomato peels, as antioxidants natural source for retarding lipid oxidation in slices of lamb meat (Awassi). Meat slices treated with potato peel extract (PPE) and tomato peel extract (TPE) in two different concentrations (0.1%, 0.5%). Then, lipid peroxidation and pH was determined in samples at three different periods with 5 days. We found low levels of peroxide value in samples due to treatment with natural antioxidants. Potato peel extracts were less effective than tomato peel extracts due to lower phenolic content 96.66 mg of Gallic acid /100 g in potato peel extract vs 130.53 mg of Gallic acid /100 g. We suggest using tomato peel extract for retarding lipid peroxidation in chilled storage of lamb meat.
Effect of Ecbolic Therapy on Postpartum Reproductive Parameters and Serum Hormonal Profile in Dangi Cows
Authors: Khasatiya C.T. , Bhoi D.B. , Desai V.K.
Published: April 2019

The study was conducted on eighteen dystocia affected Dangi cows to evaluate the effect of ecbolic therapy on postpartum reproductive parameters as well as serum progesterone and estradiol-17β profile. The cows were randomly divided into
three groups, each of 6 animals. The cows in Gr-I and Gr-II were injected with Methyl ergometrine (5 mg) and Dinoprost tromethamine (PGF2α, 25 mg) i/m, respectively, immediately after parturition and the cows of Gr-III received herbal ecbolic boli
(2-4 boli, bid, PO) for first 10 days postpartum. The blood samples were collected on 0 day (day of calving), 7th day, 14th day, 21st day and 28th day postpartum from the jugular vein. The mean first postpartum estrus interval in Gr-I, Gr-II and
Gr-III were 181.50 ± 44.73 days, 195.33 ± 23.38 days and 155.33 ± 27.81 days. The service period was 237.66 ± 28.01 days with 50 per cent (3/6) conception rate in Gr-I and 402.00 ± 46.12 days and 368.66 ± 53.46 days with 100 per cent (6/6) conception
rate in each Gr-II and Gr-III, respectively. The postpartum estrus interval and service period did not differ significantly (p>0.05) between Gr-I, Gr-II and Gr-III. A highly significant (p less than 0.01) decrease in both progesterone and
estradiol-17β concentration was observed on 7th day postpartum and thereafter fluctuated non-significantly with increasing trend on 14th , 21st and 28th day postpartum in all groups.
Effect of GnRH on Ovarian Activity in Postpartum Anestrus Sahiwal Cows
Authors: Chaturvedani A.K. , Paikra Dilip , Tiwari R.P. , Chandrakar Choodamani
Published: April 2019

A total of 14 Sahiwal cows were selected from bull mother experimental farm, Anjora, Durg with more than 65 days postpartum anestrus were randomly divided into two groups. Animals (n = 7) of treatment group were given injection GnRH @ 10 μg
intramuscularly on day 0, while those (n=7) of control group were given 2.5 ml normal saline intramuscularly. The animals in both the groups were monitored at three days interval for 24 days, i.e., on day 0, 3, 6, 9, 12, 15, 18, 21 and 24 using
trans-rectal ultrasonography (5-7.5 MHz) for development of ovarian follicles, ovulation and corpus luteum formation. Significantly larger follicles were observed on day 3, 12 (p less than 0.05) and 24 (p less then 0.01) in GnRH treatment group than
control group, suggesting folliculogenic and ovulatory effect of GnRH over 3-12 days period, with establishment of cyclicity in anestrus cattle.
Motion Characteristics and Kinematics of Fresh Spermatozoa of Gir, Surti and Murrah Bulls Assessed By Computer Assisted Semen Analyzer
Authors: Dhami A.J. , Pathak P.K. , Chaudhari D.V. , Hadiya K. K.
Published: April 2019

A study was carried out on semen of nine breeding bulls, three each of Gir, Surti and Murrah breeds, to evaluate the comparative motion characteristics and kinematics of their fresh spermatozoa by CASA. The ejaculates (n=72, 24 of each breed)
having >75% initial motility were diluted @ 80 million sperm/ml using TFYG extender and were assessed for motion characteristics by CASA. The overall mean values of rapid motile and immotile sperm per cent were observed significantly greater in
Gir bulls semen, while total motile and slow motile sperms were apparently higher in buffalo semen. The mean values of sperm velocity/ kinematic parameters observed based on all motile sperms in Gir, Surti and Murrah bulls semen were: average path
velocity 50.01±1.25, 48.51±1.03 and 49.14±1.30 μm/s; curvilinear velocity 88.62±1.66, 87.90 ±1.74 amd 88.93±1.69 μm/s, straight line velocity 44.51±1.35, 43.14±1.12 amd 41.73±2.24 μm/s; linearity 50.06±1.42, 48.86±1.32 amd 48.49±1.84 %; straightness
85.17±0.92, 84.97±0.88 and 83.90±1.17 %; wobbling index 57.00±1.17, 55.32±1.05 and 55.30±1.48 %; beat-cross frequency 15.55±0.58, 16.14±0.43 and 14.97±0.54 hz; amplitude of lateral head displacement 2.39±0.18, 2.57±0.12 and 2.31±0.14 μm; dancing
frequency 208.34±15.52,225.00 ±10.74 and 211.29±13.03 μm2/s, and dancing mean 5.70±0.46, 6.33±0.35 and 6.33±0.50 μm2/s, respectively. Almost similar trend with little higher values were noted for sperm velocity/kinematics based on only progressively
motile sperm, without breed/species variation. The semen of all three breeds behaved identically for sperm kinematics. The bull variation was insignificant for all the traits in all the three breeds.
Immunomodulatory effect of Neem (Azadiracta indica) Extract on Recovery and Conception Rate in Infectious Repeat Breeder Crossbred Cows
Authors: Kumar Sudarshan , Bhardwaz Anavil , Nema S.P. , Mahour S.S. , Chabbra Daljeet , Aich R.
Published: April 2019

The study was undertaken to evaluate the therapeutic efficacy of Neem (Azadiracta indica) extract in 20 infectious repeat breeder crossbred cows. Animals were divided into two groups of ten in each. The animals in first group were treated
with 15% concentration of Neem extract w/v dissolved in saline to make 30 ml, Intra Uterine at 24 hrs intervals for 7 days, while the animals in control group were infused with 30 ml saline for 7 days. Bacterial count in uterine flushing declined
significantly (p less than 0.05) after treatment in Neem group. A significant increase (p less than 0.05) in total cellular count and PMNs % was found in Neem group than in control group. An overall recovery rate of 80% vs 20% and conception rate of
50% vs 10% was found in Neem treated cows over control group proving its efficacy in infectious repeat breeder cows.
Evaluation of Enrofloxacin Sensitivity on Free and Biofilm Form of Salmonella Pullorum
Authors: Kavitha G. , Chandrakala G.K. , Byregowda S.M.
Published: April 2019

In the present study, Enrofloxacin sensitivity of free/planktonic and biofilm forms of Salmonella Pullorum was assessed for a period of 20 days. The parameters like Minimum Inhibitory Concentration (MIC), Minimum Bactericidal Concentration
(MBC) and Biofilm Elimination Concentration (BEC) were evaluated. The investigation revealed that the MIC and MBC values for biofilm form were found to be slightly higher than planktonic form. The values of MIC and MBC of enarofloxacin against
planktonic as well as biofilm forms of S. Pullorum were found non significant (P>0.05) during the study period. The BEC values obtained were found higher than the MBC values. Hence, the findings suggested that the fluroquinolone antibacterial
drug, enrofloxacin was found effective against the planktonic and biofilm forms of S. Pullorum and can be used for its management.
Effect of Andrographis paniculata (Burm.f) Ness Herbs and Gynura Procumbens (Merr) Leaves Extracts Combination in Free-Radical Scavenging Activity
Authors: Purnomo Sari Kurnia Rahayu , Pratama Nofran Putra , Kurniasari Margaretha
Published: April 2019

Development of medical plants as an alternative treatment needs support in terms of scientific evidence to increase public confidence in its efficacy and to ensure the safety of its use. Recent research on Andrographis paniculata (Burm.f) Ness dan Gynura procumbens (Lour.) Merr show that the combination of these two extracts has a potential to be developed into antihyperglycemic agent, through the mechanism of action as an antioxidant. The aim of this study was to evaluate the antioxidant effect of these two extracts combination. Extraction was done by maceration method. Testing of free radical capture activity was carried out by the DPPH method. The results of the antioxidant activity test showed that the combination of soluble ethanol extract of A. paniculata herbs and G. procumbens leaves 50:50 had the best IC50 value of 91.418 µg/mL, the combination of soluble ethanol extract 75:25 had IC50 value 117,059 µg/mL, and the combination combination of soluble ethanol extract 25:75 had the weakest IC50 of 142,277 µg/mL. The three comparisons of the combination were weaker in antioxidant activity compared to the standard vitamin C which had IC50 3,546 µg/mL. Statistical analysis using one-way ANOVA obtained significant differences in antioxidant activity of the three comparison groups.
Effect of Forms of Pharmaceutical Preparations on Antibacterial Activity of Red Betel Oil (Piper crocatum Ruiz & Pav.)
Authors: Marchaban Marchaban , Handayani Anisa Ragil , Kartika Elsa Putri , Sudarsono Sudarsono
Published: April 2019

The Red Sirih Essential Oil (RSEO) which be obtained from red betel leaf (Piper crocatum Ruiz & Pav.) by water and vapour distillation has potential as antibacterial activity. Formulation of an active pharmaceutical ingredient to become a pharmaceutical dosage form can generally modify their activity. The aim of the study is to proof the influence of dosage forms to the activity of RSEO. The study was done by formulating the RSEO to become emulsion, microemulsion and solubilisation dosage forms, and then, their antibacterial activity againt Escherichia coli ATCC 25922 by microdilution method of 1.25% using ELISA reader at 570 nm. The results showed that formulation reduced antibacterial activity. The raw RSEO had a Bacterial Growth Inhibition (BGI) of 66.59%, whereas microemulsion had 49.58%, emulsion had 17.45%, and solubilisation had 0% of BGI, that mean lost its antibacterial activity.
Evaluation of Peptic Ulcer Medication Use in Patients with Peptic Ulcer at Inpatient Installation RSUD Sultan Syarif Mohamad Alkadrie
Authors: Santika Novi Yana , Desnita Rise , Yuswar Muhammad Akib
Published: April 2019

Peptic ulcer is an upper gastrointestinal tract disease caused by hypersecretion of acids and pepsin of gastric mucosa. Peptic ulcer disease can be caused by several factors such as smoking, fast food, alcoholic beverages, NSAIDs and Helycobacter pylori. The purpose of this research was to obtain the distribution of antiulcer and itsrationality on peptic ulcer inpatients at the RSUD Sultan Syarif Mohamad Alkadrie Pontianak. This study is a descriptive observational study with cross sectional design. Data from medical record collected retrospectively.  This research using medical record peptic ulcer inpatients from January to December in 2017. The samples used were 34 of 44 patients who met  the  inclusion criteria. Based on results, the distribution of anti ulcer were omeprazole (2.94%), pantoprazole (73.53%), lansoprazole (26.47%), ranitidine 5.89%, 58.82% antacids and 85.29% sucralfat. The result of rationality evaluation on criteriaof appropriate indication (100%);appropriate drug (55.88%); appropriate patient (97.06%); and appropriate (61.76%). Overall,the rationality of treatment that meets all four rational treatment criterias was 78.68%.
Formulation of Orally Disintegrating Tablet from Nifedipin-β-siklodekstrin Inclusion Complex using Kneading Method
Authors: Purnamasari Nur Aini , Saputra Pratama Anggi
Published: April 2019

Nifedipine is widely used for managing hypertension. The challenges of developing nifedipine oral preparation are its low solubility and unpleasant taste. The purpose of developing the Oral Disintegrating Tablet (ODT) dosage form from the Nifedipine-β-cyclodextrin inclusion complex is to increase the solubility of nifedipine and mask the unpleasant taste of the drug. Specific target: use of a superdisintegrant combination to increase the solubility of nifedipine and mask the bitter taste. The method used in the formation of Nifedipine inclusion complex with β-cyclodextrin was kneading method. Making ODT was done by direct pressing method. Characterization of nifedipine-β-cyclodextrin inclusion complex was analyzed by FTIR and DSC. ODT was tested for the physical properties of the tablet and its solution. Test results for ODT physical properties were analyzed and compared with the literature. Data obtained from the dissolution test results calculated the concentration of the active substance dissolved at 20 minutes (Q20). The results showed that the formation of the Nifedipine-β-cyclodextrin inclusion complex increased solubility and masked the bitter taste. The combination of superdisintegrant Ac-Di-Sol-Crosspovidon accelerated the disintegration and dissolution time and improve the taste of Nifedipine ODT.
The Building of Country Manager's Competence and Its Use to Orchestra Subsidiary's Resources: Empirical Study of Indonesian Subsidiaries in Nigeria
Authors: Jimmy So Yohanes , Firmanzah Firmanzah , Balqiah Tengku Ezni , Widjaja Albert
Published: April 2019

This study employs resource orchestration model to investigate the influence of country manager’s competence on subsidiary performance in host country. Structural equation model with multisteps approach is operated using Lisrel to analyze 41 data from Indonesian business unit operating in Nigeria. This study found that country managers uses subsidiary absorptive capacity, which is formed by the combination of headquarter and local partner resources, as the dominant source of learning to develop their competence overtime. This competence does not directly influence subsidiary performance, but it is notably used to accumulate the critical assets for their subordinate business units. These assets then become valuable inputs for business units to develop or modify their operational capabilities, which directly influence the performance. One contribution of this study is providing more detail explanation of how headquarter resources invested abroad are transformed into subsidiary performance.
Monotheism as an Acquired Feature or a Built-in Human Instinct
Authors: Mansour Radwan
Published: April 2019

In this era we, human beings upon earth, revolve around religious war, be it open or covert, in which every sect claims to own God. These symptoms of ownership have found expression in the past three thousand years, with the creation of the three major religions.

Is the phenomena of Monotheism new or archaic? And what is unique in “Druze” Monotheism in this context and in the context of their values and behavior?

Is Monotheism embedded in human nature and is a part of us or is it a need for or a mechanism to cope with the metaphysical, unexplained natural forces?

Thus, arose the choice to probe the phenomena throughout history and among cultures, and to seek context within population research and background.

Kristach describes the fear of death as the first mother of all idols, upon which the pleading of people for salvation, compassion and prayer is based to keep disasters away (Tahtah, 2009). Is Monotheism a given feature exogenous to humans or an acquired one as part of an evolving process that accompanies humans?
Новые технологические решения требуют усовершенствованных инструментов проектирования печатных плат по материалам конференции, организованной компанией «ПСБ СОФТ»
Authors: Ежов В.
Published: April 2019

В статье рассмотрены новые методы и инструменты проектирования печатных плат, которые были представлены на прошедшей 3–4 декабря 2018 года в Москве конференции, организованной ООО «ПСБ СОФТ» – официальным дистрибьютором и торговым партнером компании Cadence.
Научно-технические проблемы метрологического обеспечения разработки экб нового поколения
Authors: Быканов В. , Подьяпольский Б. , Булгаков В.
Published: April 2019

Рассмотрены основные проблемы метрологического обеспечения испытаний при производстве электронной компонентной базы, выявлены их причины и предложены рациональные пути решения подобных задач.
Периферийное сканирование в учебном процессе и не только: JTAG-лаборатория в самарском университете
Authors: Гречишников В. , Курицкий А. , Бутько А. , Иванов А.
Published: April 2019

О сотрудничестве Самарского университета и компании JTAG Technologies в рамках оснащения и деятельности лаборатории периферийного сканирования и реализации программы дополнительного профессионального образования «Тестопригодное проектирование и производственная диагностика высокоинтегрированных электронных модулей».
Измерение G-чувствительности кварцевых генераторов
Authors: Иванов Ю. , Никонов А. , Князева Э.
Published: April 2019

Рассматривается зависимость стабильности частоты кварцевых генераторов от воздействия ускорения или вибрации. Эта зависимость особенно критична при работе генераторов на подвижной технике.
Синхронное статическое ОЗУ конвейерного типа
Authors: Пастухов П.
Published: April 2019

Новейшая разработка АО «ПКК Миландр» в области запоминающих устройств – микросхема 1645РУ7Я – представляет собой синхронное статическое ОЗУ (СОЗУ) конвейерного типа информационной емкостью 72 Мбит. Функциональная особенность ОЗУ – это возможность производить операцию чтения и операцию записи без циклов ожидания.
Новая серия биполярных транзисторов производства ЗАО «ГРУППА КРЕМНИЙ ЭЛ»
Authors: Громов В. , Брюхно Н. , Стрекалова В. , Паньков Т. , Алёхин С.
Published: April 2019

В 2018 году предприятие ЗАО «ГРУППА КРЕМНИЙ ЭЛ» завершило разработку и освоение серии биполярных транзисторов, в том числе транзисторов Дарлингтона и комплементарных. Новые транзисторы, предназначенные для использования в радиоэлектронной аппаратуре специального назначения, могут заменить 23 типа импортных аналогов.