bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of a Battery-Ultracapacitor Hybrid Energy Storage System with Power Flow Control for an Electric Vehicle
Authors: Tan Boon Kai , Tan Nadia M. L. , Ramasamy Agileswari 
Published: January 2019

<p class="Abstract"><span lang="EN-MY">A combination of battery and ultracapacitor as a hybrid energy storage system (HESS) of an electric vehicle (EV) </span><span lang="EN-MY">can result in better acceleration performance, reduce battery charge-discharge cycle and longer driving range. This paper</span><span lang="EN-MY"> presents a </span><span lang="EN-MY">new converter design combining triple-half-bridge (THB) and buck-boost half-bridge (BHB) converters </span><span lang="EN-MY">in a battery-ultracapacitor HESS. The BHB converter is used to compensate the voltage variation of the ultracapacitor. </span><span lang="EN-MY">A power management system is proposed to control the power of battery and ultracapacitor to supply the demanded power. This paper describes the operation of the proposed converter using a simplified </span><span lang="EN-MY">∆</span><span lang="EN-MY">-type primary-referred equivalent circuit. This paper also shows the simulation results verifying the dynamic response of the proposed power management system for the proposed HESS. </span></p>
Experimental Prototype Model of IDVR for Bidirectional Voltage Compensation
Authors: Nittala Ramchandra , Parimi Alivelu M. , Rao K. Uma 
Published: January 2019

<span lang="EN-US">Interline Dynamic Voltage Restorer (IDVR) is an optimum solution to compensate voltage sag in multiple lines. The IDVR consisting of two or more DVRs connected to different feeders in a power system sharing a common DC link energy. This paper presents the hardware implementation of novel bidirectional voltage sag compensation by the IDVR in multiple feeders at same instance. A two line feeder power system with IDVR installed is considered. The IDVR is implemented using two VSI with filter. The control system of IDVR is developed using DSPACE 1103. </span>
Review on Solar Collector for Agricultural Produce
Authors: Fudholi Ahmad , Sopian Kamaruzzaman 
Published: January 2019

<span>Among the most important components of solar energy systems, solar collectors are devices that receive solar energy and convert it into thermal energy, as most essential components of solar dryer. This review presents description and previous work performed on performances of solar air collector for agricultural produce. In addition, various solar collectors are classified and described. Solar air collectors for drying application of agricultural produce are presented and summarize. The energy and exergy efficiency of the solar air collector ranges from 28% to 62% and from 30% to 57%, respectively. </span>
The Calibration Test Of Hybrid Landfill Gas -Photovoltaic-Genset Model In Bontang, East Borneo
Authors: Manjang Salama , Ahsan Sitti Hamnah 
Published: January 2019

The study is aimed to determine the measurement of sensor tool made in Model Real Time Hybrid LFG-PV-Genset by finding the correction factor produced at TPA Bontang City, East Borneo. The research was conducted by using ampere clammeter, variable voltage regulator, thermometer, odalog7000 series. The calculation results show that the calibration test of Model Real Time Hybrid LFG-PV-Genset from MQ4 sensor data that has been designed capable of having errors of 1,91% and the LM35 temperature sensor is capable of monitoring tempertures of 30°C to 120°C and has an error value of 0,519°C. ZMPT 101B voltage sensor has a linear output change to input changes and has an average error of 1.499V. While the current sensor SCT 013 has an aerage error value of 0,0022A CO2.
Experimental Analysis of Simplified Rules Fuzzy Logic Speed Controller for Wide Speed Range Operations
Authors: Talib Md Hairul Nizam , Ibrahim Z. , Rasin Z. , Lazi J.Mat , Azri M. , Farah N.S.Y. 
Published: January 2019

<p>This paper presents the experimental analysis of simplified rules Fuzzy Logic Speed Controller (FLSC) of Induction Motor drive. The maximum gain of input scaling factor, FLSC is generally limited by the coverage of universe of discoursed (UoD). Thus, to further increase the input gain scaling factor, the outer membership function need to be increased. This analysis covers various values in the range of UoD values from [-1,1] to [-5,5] for the wide speed range operations from low to rated speed ranges. The FLSC is employed to the indirect Field Oriented Control method fed by a voltage source inverter. Simulation and experimental verification is done by using Matlab/Simulink and dSPACE 1103 controller experimental rigs respectively. Based on the results, speed performance behaviours are improved over the wide speed range operations in term of rise time and setting time. The tuning approached is simple without additional algorithm for faster and more accurate response.</p>
An Optimized Speed Controller for Electrical Thrusters in an Autonomous Underwater Vehicle
Authors: Vinida K. , Chacko Mariamma 
Published: January 2019

<span lang="EN-US">This paper focuses on the development of a prototype of thruster motor speed controller which exhibits robust performance for an Autonomous underwater vehicle. H infinity based speed controller with particle swarm optimized weights for a sensorless BLDC motor which is used as electrical thruster has been simulated in MATLAB/ SIMULINK and implemented using TI C2000 Delfino LaunchPad LaunchXL-F28377S and BoostXL DRV 8301. A performance comparison in reference tracking has been done with conventional PI controller and experimental results have been discussed in detail. The percentage variation in speed with respect to reference speed of proposed strategy has been observed to be 0.65% whereas it is 1.1% with PI controller. It has also been found that the proposed control strategy exhibits smooth starting with better reference tracking and less torque ripples.</span>
A New Approach for Determining the Cost Allocation by Considering Transmission Line Mutual Inductance for Multilateral Contracts
Authors: Deepthi Suma , Sumadeepthi V. , Rama K. 
Published: January 2019

<p>Addressing loss due to transmission and its cost allocation in deregulated electricity market is an essential issue. Independent System Operator (ISO) provides the active power loss from the generators and the associated cost is allocated to the concerned parties in a fair way. The generators and loads participate in the loss/cost allocation process. The highlight of the paper is that the effect of mutual inductance (MI) that exists on transmission line in transmission loss/cost allocation process for multlateral contracts is illustrated. To demonstrate the effect of mutual inductance, the results of existing loss allocation methods like penalized quoted cost (PQC) based approach are discussed. Effect of mutual inductance is presented using an IEEE 30 bus system. The simulation results are carried out using MATLAB R2014a. The result shows that mutual inductance has a significant impact on transmission loss and hence cannot be ignored.</p>
A Novel Approach for grid integration of Cascaded H-bridge Multilevel Inverter Under Partial Shading Condition
Authors: Panigrahi Swetapadma , Thakur Amarnath 
Published: January 2019

<p>A modular cascaded H-bridge PV inverter system is presented in this paper. The modular structure of PV inverter helps in obtaining the maximum output power of PV system along with increase the overall efficiency of the whole system. Moreover to utilize the system up to the best a distributed MPPT controller is attached with each PV panel. As partial shading causes power imbalance at the converter output that leads to imbalance grid current, a control technique called the modulation compensation is adopted in such a way that if three phase unbalanced voltage varies directly according to unbalanced power, the injected zero sequence voltage components make the grid current balanced.</p>
Effect of Carrier Frequency in Grid Inter Connected Wind System With SSFC Controller
Authors: Kuchibhatla Samanthaka Mani , Padmavathi D , Srinivasa Rao R 
Published: January 2019

<p>In this paper a grid interconnected system with wind energy source linked with a FACTs based SSFC device ( Static switched filter compensator ) at load for enhancing power quality is considered .Analysis is done for the proposed system by varying Carrier frequency over a wide range and observed system performance at all 3 busses wise Grid bus, Generator Bus and Load Bus. Two regulators are used to organize the FACTS SSFC-device, these are based on a tri-loop dynamic error obsessed inter-coupled input to VSC controller. Investigation is made in MATLAB/SIMULINK Environment for the proposed system ,it is observed that system performance in terms of percentage Total harmonic Distortion is satisfactory along with the Enhanced Power Quality.</p>
Effect of dust accumulation on the performance of photovoltaic panels in desert countries: A case study for Madinah, Saudi Arabia
Authors: Benghanem Mohamed , Almohammedi Abdullah , Taukeer Khan Mohammed , Al-Masraqi Ahmad 
Published: January 2019

<p>The present research shows the effect of dust accumulation on the surface of photovoltaic (PV) modules, which cause losses in their output power. We got 28% of losses in output power at Madinah city during 60 days of dust accumulation. Two ways were used to study the effect of dust on the PV modules of type monocrystalline silicon: the quantitative and the qualitative approaches respectively. A model based on dust density is used to determine the losses of output PV power. We propose to add an important parameter noted dust accumulation coefficient (%/mg.cm<sup>-2</sup>), in data sheet of PV modules manufacturer. In addition, an intelligent cleaning system is proposed, using the notion of dust density, to start cleaning when an admissible value of power losses is reached. This process allows minimizing the effect of dust.</p><p> </p>
Elementary Analysis of Segmental Stator Flux Switching Permanent Magnet Machine
Authors: Othman S. M. N. S. , Omar M. F. , Rahimi S. K. , Sulaiman E. 
Published: January 2019

<span lang="EN-US">Segmental structure is common especially for a rotor in electrical motor. It is to reduce the cost of production, conveniently replace, and as a module where the sum of electromagnetic torque produced comes from each segmental stator add up together. Thus, in this paper will be focusing on the elementary analysis of a segmental stator for single phase 6Slot-12Pole and 3 phase 6Slot-15Pole Switched-Flux Permanent Magnet Machine (SFPMM) as the chosen design for analysis validation from coventional permanent magnet flux switching machine to a new segmental stator structure of SFPMM. It will be focusing on the initial design and to prove that it can be operate as a flux switching machine by implement a 2D Finite Element Analysis simulations such as a No-load analysis (flux linkage, cogging torque, back emf) and Load-analysis (average electromagnetic torque. Elementary result shows that the electromagnetic torque produce for both design are 10.6 Nm and 99.95 Nm and proved that it can produce high torque although it does not surpass the conventional SFPMM. A further research and optimization will be needed to obtain a higher torque compared to conventional SFPMM.</span>
Enhancing the Performance of PV Panel Undergoing Shading Effects
Authors: Al-Chaderchi Monadhel , Sopian K. , Salameh T. , Zhang D. , Alghoul M. A. 
Published: January 2019

<p>Experimental and simulation work were performed to study the effects of shading for different strings inside photovoltaic (PV) panels under real outdoor environmental climate conditions for Sharjah, United Arab Emirates. The electrical characteristics of PV panel were measured by using the PV analyzer, while the simulations were performed by MATLAB. The effect of full cell shading were studied experimentally for each configuration of two or four bypass diodes and verified by theoretical modeling. The I-V and P-V curves for all cases were recorded to investigate the effect of bypass diodes in reducing shading losses under similar environmental conditions. Compared to design with fewer bypass diodes, inserting more bypass diodes (four diodes in our work) contributed to higher yield in performance of solar PV panels undergoing shading while taking in to account the cost of energy production. Compared to the case of two bypass diodes, applying four diodes can recover up to ~31% of non-shaded maximum power under different cell shading conditions. </p>
Breeding record of Common Hoopoe Upupa epops (Aves: Upupidae) at Satchari National Park in northeastern Bangladesh
Authors: Hasan Sabit , Ahmed Tanvir , Al-Razi Hassan 
Published: January 2019

Common Hoopoe Upupa epops was thought to breed in Bangladesh but with no confirmed records. The observation presented in this paper of a breeding pair with its chick at Satchari National Park in northeastern Bangladesh is the first confirmed breeding record of the species from the country.
Taxonomic notes on Grosourdya muriculata (Orchidaceae: Epidendroideae: Vandeae: Aeridinae), a little known endemic orchid from the Andaman & Nicobar Islands, India
Authors: Mishra Sanjay , Vivek C. P. , Ekka Gautam Anuj , Singh Lal Ji 
Published: January 2019

Grosourdya muriculata (Rchb.f.) R. Rice (Orchidaceae) is a little known epiphytic, endemic orchid from the Andaman & Nicobar Islands in India. The present article provides the detailed taxonomy, ecology, distribution, conservation status, and photographic account of the species. The data collected from field surveys indicates that the status of the species needs to be downgraded to Near Threatened as per the criteria of IUCN (2018).
Functional sperm assessments of African Lion Panthera leo (Mammalia: Carnivora: Felidae) in field conditions
Authors: Barbosa Thiesa Butterby Soler , Angrimani Daniel De Souza Ramos , Rui Bruno Rogério , Losano João Diego De Agostini , Bicudo Luana De Cássia , Blank Marcel Henrique , Nichi Marcilio , Pizzutto Cristiane Schilbach 
Published: January 2019

Wild African Lion Panthera leo populations are decreasing due to inbreeding and reduced genetic variability. Thus, the use of assisted reproduction in the species could one day become essential. Before this is possible, however, studies need to be conducted on the basic reproductive traits of the species, especially those regarding sperm cells. This study aimed to analyze the semen of African Lions in field conditions. We included seven captive African Lions in our study. The animals were chemically restrained and electro-ejaculated. Twenty sperm samples were selected and analyzed for sperm motility and progressive motility, sperm motility index, and sperm morphology. In addition, the samples were analyzed for membrane and acrosome integrity (hypoosmotic swelling test and fast green/rose Bengal dyes, respectively) and assessed for cytochemical activity of the mitochondria. We found that sperm motility rate was 75.25%±2.03, progressive motility rate was 3.25%±0.10, and sperm motility index was 70.12%±1.71. We found morphologic abnormalities roughly at the expected rate with 34.61%±7.22 of the sperm cells having an intact plasma membrane and acrosome integrity of 92.27%±2.73; high mitochondrial activity was 54.26±4.88% and absence of mitochondrial activity was 2.72±0.68% in the sperm cells. These findings show that conventional tests for sperm motility and sperm morphology bring about the expected results for lions according scientific literature. Though a hypoosmotic swelling test may be performed using different concentrations, it might lead to a higher number of sperm cells with membrane damage. Fast green/rose Bengal stain and 3’3 diaminobenzidine assay, however, can be used in sperm analysis of lions in field conditions.
Annotated checklist and conservation status of mammals of Fars Province, southern Iran
Authors: Zarei Fatah , Kafaei Sasan , Esmaeili Hamid Reza 
Published: January 2019

Our purpose in this study was to gather all previously published data and our own data of extensive field expeditions and camera trapping to present a general view of the Fars mammals. The mammals of Fars Province, southern Iran, comprise of 72 species in 53 genera, 28 families and seven orders. The most diverse order is Chiroptera with 23 species or 31.9% of the mammalian fauna, followed by Carnivora and Rodentia (each with 18 species, 25%). The most diverse family is Vespertilionidae with nine species or 12.5% of the mammalian fauna, followed by Rhinopomatidae and Muridae, each with eight species or 11.1% of the mammalian fauna, Felidae and Canidae (each with five species, 6.9%), respectively. Sixteen families have only one species each. The Fars Province is the type locality of Triaenops persicus Dobson, 1871, Eptesicus serotinus shiraziensis (Dobson, 1871), Microtus irani Thomas, 1921, and Apodemus witherbyi (Thomas, 1902). Five species are listed in the Appendix I, eight species in the Appendix II, and eight species in the Appendix III of the Convention on International Trade in Endangered Species (CITES). In addition, three species are considered as endangered and nine species as protected species based on the rules and regulations/laws of the Iranian Department of the Environment (DOE). The Asiatic Lion Panthera leo persica Meyer, 1826 is extirpated in Iran. Among the reported species, 60 species (83.3%) are considered as Least Concern (LC), two species as Not Evaluated (2.7%), one species as Data Deficient (1.4%), six species (8.3%) as Vulnerable (VU), and three species (4.2%) as Near Threatened (NT) in the IUCN Red List of Threatened Species. The current checklist shows that the mammalian fauna of Fars Province is rich and taxonomically diverse, and the provided information will be necessary for the development of competent and pragmatic management plans and effective conservation policies.
Feeding trails of Dugong Dugong dugon (Müller, 1776) (Mammalia: Sirenia: Dugongidae) in the Gulf of Kachchh, western coast of India
Authors: Apte Deepak , Parasharya Dishannt , Patel Bhavik 
Published: January 2019

Dugong Dugong dugon (Müller, 1776) is the only herbivorous marine mammal distributed along the tropical and subtropical oceans of the Indo-Pacific regions. The record of the species in India is mainly from the east coast including Andaman and Gulf of Mannar. In this note the authors have recorded feeding trails of Dugong on the Halodule uninervis meadow in the Gulf of Kachchh, i.e., northwestern part of India. Most of the records of this species from this area are stranding records. This is the second record of the trail from this region.
New records of Chrysomya putoria and C. thanomthini (Diptera: Calliphoridae) from India, with a revised key to the known Indian species
Authors: Bharti Meenakshi 
Published: January 2019

Chrysomya putoria (Wiedemann, 1830) and C. thanomthini Kurahashi & Tumrasvin, 1977 were recorded for the first time from India. The species were collected from an altitude of 2,000m in the Himalaya. An updated key to the Indian species of the genus Chrysomya Robineau-Desvoidy, 1830 is provided herein.
Cerebral White Matter Hyperintensities, Kidney Function Decline, and Recurrent Stroke After Intensive Blood Pressure Lowering: Results From the Secondary Prevention of Small Subcortical Strokes (SPS3) Trial
Authors: Ikeme Jesse C. , Pergola Pablo E. , Scherzer Rebecca , Shlipak Michael G. , Catanese Luciana , McClure Leslie A. , Benavente Oscar R. , Peralta Carmen A. 
Published: January 2019

Background

We aimed to determine whether cerebral white matter hyperintensities (
WMHs
) can distinguish stroke survivors susceptible to rapid kidney function decline from intensive blood pressure (
BP
) lowering.

Methods and Results

The SPS3 (Secondary Prevention of Small Subcortical Strokes) trial randomized participants with recent lacunar stroke to systolic
BP
targets of 130 to 149 and <130 mm Hg. We included 2454 participants with
WMH
measured by clinical magnetic resonance imaging at baseline and serum creatinine measured during follow‐up. We tested interactions between
BP
target and
WMH
burden on the incidence of rapid kidney function decline (≥30% decrease from baseline estimated glomerular filtration rate at 1‐year follow‐up) and recurrent stroke. Rapid kidney function decline incidence was 11.0% in the lower‐
BP
‐target arm and 8.1% in the higher‐target arm (odds ratio=1.40; 95% CI=1.07–1.84). Odds ratio for rapid kidney function decline between lower‐ and higher‐target groups ranged from 1.26 in the lowest
WMH
tertile (95%
CI
, 0.80–1.98) to 1.71 in the highest tertile (95%
CI
, 1.05–2.80;
P
for interaction=0.65). Overall incidence of recurrent stroke was 7.9% in the lower‐target arm and 9.6% in the higher‐target arm (hazard ratio=0.80; 95%
CI
, 0.63–1.03). Hazard ratio for recurrent stroke in the lower‐target group was 1.13 (95%
CI
, 0.73–1.75) within the lowest
WMH
tertile compared with 0.73 (95%
CI
, 0.49–1.09) within the highest
WMH
tertile (
P
for interaction=0.04).

Conclusions

Participants with higher
WMH
burden appeared to experience greater benefit from intensive
BP
lowering in prevention of recurrent stroke. By contrast, intensive
BP
lowering increased the odds of kidney function decline, but
WMH
burden did not significantly distinguish this risk.

Clinical Trial Registration

URL
:
http://www.clinicaltrials.gov
. Unique identifier:
NCT
00059306.
Metoprolol Inhibits Profibrotic Remodeling of Epicardial Adipose Tissue in a Canine Model of Chronic Obstructive Sleep Apnea
Authors: Dai Hui , Yuan Yue , Yin Shuangli , Zhang Yun , Han Yu , Sun Li , Li Tiankai , Xu Jicheng , Sheng Li , Gong Yongtai , Li Yue 
Published: January 2019

Background

Whether chronic obstructive sleep apnea (
OSA
) could promote epicardial adipose tissue (
EAT
) secretion of profibrotic adipokines, and thereby contribute to atrial fibrosis, and the potential therapeutic effects of metoprolol remain unknown.

Methods and Results

A chronic
OSA
canine model was established by repeatedly clamping the endotracheal tube for and then reopening it for 4 hours every other day for 12 weeks. In a metoprolol treatment group, metoprolol succinate was administered daily for 12 weeks. The
EAT
infiltration and left atrial fibrosis were examined. The expressions of adipokines secreted by
EAT
and hypoxic 3T3‐L1 adipocytes were detected. The changes in collagen synthesis, transforming growth factor‐β1 expression, and cell differentiation and proliferation in cardiac fibroblasts induced by hypoxic 3T3‐L1 adipocyte‐derived conditioned medium were further analyzed. Chronic
OSA
induced infiltration of
EAT
into the left atrium.
OSA
enhanced the profibrotic effect of
EAT
on the adjacent atrial myocardium. Moreover,
OSA
induced profibrotic cytokine secretion from
EAT
. We also found that hypoxia induced adipokine secretion in cultured adipocytes, and the medium conditioned by the hypoxic adipocytes increased collagen and transforming growth factor‐β1 protein expression and cell proliferation of cardiac fibroblasts. More importantly, metoprolol attenuated infiltration of
EAT
and alleviated the profibrotic effect of
EAT
by inhibiting adipokine secretion. Metoprolol also inhibited hypoxia‐induced adipokine secretion in adipocytes and thereby blocked the hypoxic adipocyte–derived conditioned medium–induced fibrotic response of cardiac fibroblasts.

Conclusions

Chronic
OSA
enhanced the profibrotic effect of
EAT
on the neighboring atrial myocardium by stimulating the secretion of profibrotic adipokines from
EAT
, which was significantly attenuated by metoprolol. This study gives insights into mechanisms underlying
OSA
‐induced atrial fibrillation and also provides experimental evidence for the protective effects of metoprolol.