bluuebunny/crossref_metadata_2025 huggingface dataset:
Empirical modelling of temperature in fogging greenhouse
Authors: Simek Khachonsak , Treeamnuk Krawee , Treeamnuk Tawarat
Published: September 2020

The objective of this article is to evaluate the inside temperature of greenhouse and efficiency of fogging system under the influence of solar power. A 50% off sun shading roof was selected to test in this study. Testing is divided to 2 cases. Case I Measuring all of parameters without operate the fogging system and ventilation between 9.00 a.m. to 5.00 p.m. (Thailand’s time zone). Case II Measuring all of parameters with a fogging system that was controlled the relative humidity below 80% all day. The results show that the highest temperature in greenhouse is 50.13oC (no fogging and ventilation). the developed empirical model has an error 6.33% between numerical results and measured air temperature. In case of neglected solar power, the model showed that the fogging system can reduce the temperature in greenhouse in range of 7.05°C (18.44%) and the efficiency of fogging system is quite high (value is 57.36%). The important factor that influents on the air temperature in greenhouse is solar power. If we need to control the atmosphere in greenhouse by fogging system than the reduction of solar power is the most important controlling factor.
Examining the effect of biofuel industry on Thailand's economy dependent on input-yield model
Authors: Limchaikit Thipruedee , Boonpramote Thitisak , Bunditsakulchai Pongsun
Published: September 2020

This examination is to consider the effect of the biofuel business incorporates ethanol and biodiesel, to Thailand's Economy by utilizing Input-Output examiner. Thailand's Alternate Energy Development Plan (AEDP) has been advancing the biofuel business persistently in the previous ten years by sponsoring biofuel items and propelled command strategy. This arrangement is concentrating on expanding residential elective vitality use to supplant petroleum derivative imports and increment inside vitality security. In any case, the test of this industry is the items' value seriousness with customary fuel, and appropriation is required to cause this industry to continue in the market. Right now, we have constrained information about the monetary ramifications. The principle goal of this investigation is to concentrate on the effect of the biofuel business on every industry part and an total yield of Thailand's economy. Thus, the biofuel business can expand the complete yield of the Thai economy, family unit pay. Nonetheless, this industry has a somewhat negative on expense and worth included. From upsides and downsides correlation, despite the fact that the administration marginally misfortune advantage in duty and worth included, yet that advantage goes to family unit salary. Thus, biofuels advancement is suggested.
Effect of torrefaction temperature on energy properties of spent coffee ground
Authors: Bangkha Natthanant , Saechua Wanphut , Nuamyakul Tharathip , Jongyingcharoen Jiraporn Sripinyowanich
Published: September 2020

The aim of this research was to investigate the effect of torrefaction temperature on 4 energy properties as high heating value (HHV), enhancement factor, solid yield, and energy yield of spent coffee ground (SCG). Four different torrefaction temperatures (200, 250, 300, and 350°C) were selected. Torrefaction process was conducted at the heating rate of 10°C/min. HHV and enhancement factor were the highest when SCG was torrefied at the highest temperature of 350°C. However, at this temperature, solid and energy yields were the lowest. Torrefaction temperature highly affected these four energy properties with R of higher than 0.9. Regression models representing the relationship between torrefaction temperature and HHV and energy yield were HHV = 0.0519T+15.917, R2 = 0.9483 and energy yield = -0.2743T+155.1, R2 = 0.9976. These models are helpful for prediction of the energy properties of SCG undergoing torrefaction process in the studied temperature range.
Drying kinetics of passion fruit peel for tea products
Authors: Sittipa Chatsuda , Achariyaviriya Siva , Achariyaviriya Aree , Moran James C.
Published: September 2020

An important step in the development of passion fruit tea products is the drying procedure. This procedure uses a lot of energy. The optimization of drying needs knowledge of the drying kinetics. This paper focuses the development of drying kinetics for passion fruit peel. The experiments were conducted utilizing a thin layer dryer with drying air temperatures in the range of 45°C to 65°C The drying air velocity was constant at 1 m/s. The passion fruit peel were dried from their initial moisture content of 559±16% db to a final moisture content of 50±1% db. The models for the kinetic drying proposed by the authors are the Newton model, Page model and the Logarithmic model. The parameters for the drying kinetic models were found by curve fitting the experimental data using non-linear regression. The criteria for evaluating the models were the coefficient of determination (R2), a root mean square error (RMSE) and a reduced chi- square (x2). It was found that the drying kinetic model for passion fruit peel which gave the best fit was the Page model. This drying kinetic model can be applied to find optimum drying conditions.
Evaluation of subsurface irrigation on microorganism contamination of romaine lettuce
Authors: Reyes Esteves Rocio G. , Gerba Charles P. , Slack Donald C.
Published: September 2020

The use of contaminated water to irrigate crops by surface, sprinkler, or conventional drip irrigation represents a significant public health concern due to the presence of multiple microbial pathogens associated with gastrointestinal disease. In this study, Escherichia coli and MS2 bacteriophage were used as microbial surrogates to evaluate the contamination of romaine lettuce (Lactuca sativa L. var. longifolia) using bottom watering pots simulating a subsurface drip irrigation (SDI) system in a greenhouse. The primary goal was to determine whether the exposure of lettuce plants to E. coli and MS2 would result in detectable levels of these microorganisms associated with the edible portions of plants. Plants were grown in bottom watering pots and were irrigated the last twelve days before harvesting with contaminated water containing E. coli and MS2 phage at 109 CFU/ml and 1011 PFU/ml, respectively. Harvested plants were processed to determine if E. coli or MS2 was associated with the plant surfaces or within the plant tissues. None of the samples was positive for either E. coli or MS2 bacteriophage, suggesting that subsurface irrigation systems effectively reduce the risk of produce-contamination with bacterial and viral pathogens.
Design and evaluation of a rabbitry structure at different environments and feeding requirements
Authors: Nate John Vincent , Natividad Elijohn , Lavarias Jeffrey , Gavino Romeo , Castillo Claire Marie
Published: September 2020

This study, focused on a designed cage structure, had a main objective on evaluating the growth performance of caged rabbits at three (3) stocking/spacing reared at three (3) growing conditions. Thirty-six (36) samples of 35-days old Californian White x Local (CWxL) rabbits were reared under three (3) blockings (air-conditioned room, open rabbitry housing and under the trees’ shade). Moreover, spacing (A treatment) and feed plan (B treatment) was organized in a 3 x 4 Factorial RCBD. A 2nd factor (feed plan) was used in order to determine the interaction effect of spacing on the rabbits fed with varying levels of nutrition. Results indicated that the treatments and blockings (growing conditions) had significant effects on the Body Weight Gains (BWGs) of rabbits. Similarly, the BWGs were significantly affected by the feed plan but was not affected by spacing and the interaction of these two (2) factors. While no significant effects on BWGs were found out on rabbits placed in small (ai), medium (a2) and large (a3) cages, as highest BWGs were seen in the rabbits in medium cages, this cage structure (381 mm x 508 mm x 406 mm per rabbit) seemed enough to properly house the rabbits.
Towards Integration of Heterogeneous Controllers in an IOT-based Automation System
Authors: Wicaksono Handy , Santoso Petrus , Handoyo Putro Iwan , Surya Hutomo Ivan , Alvina Pricilia
Published: September 2020

Heterogeneous controllers (such as: various brands of PLCs and microcontrollers), are existed in an automated system. This research propose a framework to integrate them by using NodeRed, an open source project to gather various devices and services in an IOT setting. The research framework was applied successfully in three cases: a smart home prototype for elderly, a smart door using face recognition method, and an automated system for multiple houses in separated locations.
Design of DC Wirings for Urban House in Indonesia Including Analysis on Appliances, Power Losses, and Costs: An alternative to Support Rooftop PV Uptake
Authors: Satya Kumara I Nyoman , Gede Santika I Wayan , Eka Wiantara Putra I Gede , Sitompul Daniel , Gede Indra Partha Cokorde
Published: September 2020

Most of the application of solar PV in Indonesia uses inverter, which is a complex and expensive electronics system. Many of the PV plants are in fault condition due to the failure of the inverter. This paper proposed DC wirings powered by solar PV for houses in the urban area of Indonesia. First, the paper reviewed the availability of electrical appliances powered by DC voltage supply. Secondly, it presents AC and DC house wiring designs for a house with 1 300 VA electrical power limit. Losses of both wirings are analyzed and compared, including the cost of wirings materials. The survey showed appliances such as air conditioning, fridgefreezer, television, washing machine, and other appliances are now available in DC voltage supply. A 48 V DC bus is chosen to minimize losses. From a cost perspective, AC and DC wiring systems are comparable, but the DC house is slightly more expensive due to the cost of appliances. The cost of DC wirings is lower due to the lower cost of the DC-DC converters and uses fewer conductors. The results provide an alternative to using solar PV directly distributed as DC voltage for the houses in the urban area of the country.
Child Location Tracker with Virtual Fence
Authors: Dedy Irawan Joseph , Adriantantri Emmalia , Bohaswara Haryasena Agustinus
Published: September 2020

With widespread news of child abductions circulating in the media, child abduction is one of the anxieties felt by parents, especially those who have small children. Many ways have been tried to overcome this risk, ranging from restricting children from leaving the home alone to schools building fences around the school so students cannot leave the school grounds and not giving people the opportunity to enter a school without a clear purpose. With the development of information technology and the increasing availability of communication devices, such as the smartphones that are owned by so many children, these devices can be used to track the whereabouts of children so they can be easily monitored by their parents wherever they may be. By adding an application to the device, a boundary area can be made within which a child can safely be active, such as the school grounds. After children enter the school area in possession of this application, a message will automatically be sent to parents and teachers if the child and the device unexpectedly leave the school area so immediate action can be taken.
Determination of Generator Capability Curve using Modified-Single Machine to Infinite Bus (M-SMIB) System Approach
Authors: Rusilawati Rusilawati , Budi Sulistiawati Irrine , Yorino Naoto
Published: September 2020

The capability curve for each generator unit is usually provided by the generator manufacturer. But in practice, the generator can reach its maximum generation limit before reaching the maximum limit on the generator capability curve provided by the generator manufacturer. This might occur because of the load location is far from the generator or the varying of the loading value so that the maximum generation limit is smaller than the value given on the generator capability curve of the manufacturer. In this paper, the generator capability curve is determined using the Modified Single Machine to Infinite Bus (M-SMIB) system approach to determine the maximum generation limit every time there is a change in loading or change in the load location. After the maximum generation limit of each unit generator is known, the generator capability curve that is always in accordance with the real time situation can be formed. Thus, the operation limit of each generator can be recognized, determine the appropriate protection system setting and can prevent the electric power system disturbance. This method will be applied to generator units in the four bus IEEE system with two generators.
Dual-polarized antenna design integrated with metasurface and partially reflective surface for 5G communication
Authors: Li Zhilong , Mu Yajie , Han Jiaqi , Gao Xiaohe , Li Long
Published: September 2020

A design of electrical down-tilt dual-polarized base station antenna array (BSAA) for 5G communication applications is presented in this paper, which is realized by integrating with reconfigurable reflective metasurface and partially reflective surface (PRS). By controlling the varactor diodes which are inserted into the reflective elements, we can adjust the mainlobe direction of BSAA. Moreover, the PRS over the array is utilized to construct Fabry-Perot (FP) cavity with reflective metasurface and ground plane. Based on this design approach, a 1 × 6 dual-polarized BSAA operating from 3.4 GHz to 3.6 GHz is designed and fabricated. Simulated and measured results show that the gain is enhanced about 2.56 dB by PRS while side lobe level (SLL) is less than −20 dB. The mainlobe of the antenna array can be adjusted accurately within ±5° for beam down-tilt. The cross polarization discrimination (XPD) is less than −40 dB.
Effects of tool pin profile on tensile and wear behaviour of friction stir welded AA6101-T6 and AA1350 alloys
Authors: Ashok kumar R. , Muneeswaran R. , Saravana Mohan M. , Rengarajan Sathish , Raghav G.R. , Nagarajan K.J.
Published: September 2020

In Friction Stir Welding (FSW) technique, hard rotating tool with specially profiled pin is plunged into base metals and traversed along the interface of the plates, generating the frictional heat and plasticizing the base metals. This leads to flow of materials and makes solid state joint. AA6101-T6 and AA1350 alloys are widely applied in electrical bus bars, because of their high electrical conductivity. In this present work, these two alloys are joined by varying the pin profile of the tools as circular, triangular, square and hexagonal. Of these four joints, the joint fabricated by circular pin profiled tool exhibits poor tensile and wear properties whereas hexagonal pin profiled tool exhibits better tensile and wear properties. This is due to the volume defects and grain refinement at stirred zone.
Physical and numerical modeling of liquid slag entrainment in mould during slabs casting
Authors: Bielnicki Marcin , Jowsa Jan
Published: September 2020

The paper presents results of physical and numerical modeling of liquid slag entrainment during continuous casting of steel slabs process. The main aim of this work was to determine the critical casting speed and also to specify, which entrainment mechanism is most responsible for transport of slag droplets into steel volume. Physical modeling was based on water-oil model of mould, made on reduced linear scale of Sl = 0.4. In mathematical modeling, Realizable k-ε and LES WALE models were used to describe turbulent motion of water and oil, whereas Volume of Fluid model was used to take into account interactions between phases. It was found, that the main cause of slag entrainment is the formation of von Karman vortex in the vicinity of submerged entry nozzle. The results of laboratory experiments and numerical simulations were compared each other. Both method are a useful tools for modeling of slag entrainment. Great agreement was found between laboratory experiments and numerical simulation carried out using LES WALE model, regarding the shape of the oil and oil entrainment as a result of vortex structures formation. However, in the simulation case using Realizable k-ε model, the oil entrainment hasn’t been modeled for the conditions under consideration.
Experimental investigation of process parameters in WEDM of Al 7075 alloy
Authors: Mandal Kingshuk , Bose Dipankar , Mitra Souren , Sarkar Soumya
Published: September 2020

Process parameters selection is a critical task in wire electro-discharge machining (WEDM). The parameter settings would vary when a material to be machined is changed. In the present study, experimental investigation has been carried out for appropriate selection of process parameters in WEDM of Al 7075. It has been perceived that pulse on time (Ton), arc on time (Aon) pulse off time (Toff), arc off time (Aoff), servo sensitivity (Sc), wire tension (Wt) and servo voltage (Sv) are the major influencing factors on machining speed (Vc), corner error (Ce) and surface roughness (Ra) for this alloy. It is also observed that selected seven process parameters are essential for effective machining of Al 7075 alloy. Finally, three-dimensional (3D) surface topography has been analysed to determine the characteristics of the machined surface.
Development of palladium nanoparticles deposition on a copper substrate using a molecular dynamic (MD) simulation: a cold gas dynamic spray process
Authors: Oyinbo Sunday Temitope , Jen Tien-Chien , Aasa Samson A. , Abegunde Olayinka Oluwatosin , Zhu Yudan
Published: September 2020

The objective of this study is to create an ultra-thin palladium foil with a molecular dynamic (MD) simulation technique on a copper substrate surface. The layer formed onto the surface consists of a singular 3D palladium (Pd) nanoparticle structure which, by the cold gas dynamic spray (CGDS) technique, is especially incorporated into the low-cost copper substrate. Pd and Cu have been chosen for their possible hydrogen separation technology applications. The nanoparticles were deposited to the substrate surface with an initial velocity ranging from 500 to 1500 m/s. The particle radius was 1 to 4 nm and an angle of impact of 90° at room temperature of 300 K, in order to evaluate changes in the conduct of deformation caused by effects of size. The deformation mechanisms study revealed that the particle and substrate interface is subject to the interfacial jet formation and adiabatic softening resulting in a uniform layering. However, shear instabilities at high impact speeds were confirmed by the evolution of von Mises shear strain, temperature evolution and plastic strain. The results of this study can be used to further our existing knowledge in the complex spraying processes of cold gas dynamic spray technology.
Assessment bei Neglect
Authors: Keller Ingo
Published: September 2020

Eines der komplexesten Phänomene innerhalb der Neurologie ist das der unilateralen Vernachlässigung, des Neglects. Damit ist gemeint, dass der Patient die der Hirnschädigung gegenüberliegende Seite des eigenen Körpers sowie des ihn umgebenden Raumes trotz intakten Gesichtsfelds nicht beachtet. Welche Assessments zur Beurteilung des Neglects eingesetzt werden können, beschreibt der folgende Artikel.
Phytochemical Analysis, In Vitro Anti-Inflammatory and Antimicrobial Activity of Piliostigma thonningii Leaf Extracts from Benin
Authors: Marquardt Peter , Vissiennon Cica , Schubert Andreas , Birkemeyer Claudia , Ahyi Virgile , Fester Karin
Published: September 2020

The leaves of Piliostigma thonningii are used in traditional medicine in Benin to treat inflammatory skin diseases and infections. So far, pharmacological studies of the anti-inflammatory and anti-infective effects of phytochemically characterized extracts of P. thonningii have been very limited. Therefore, we investigated the in vitro anti-inflammatory and antimicrobial effect of P. thonningii leaf extracts and analyzed the phytochemical composition of extracts of different polarities (water, 50% ethanol, and n-hexane). Quercetin-3-O-rhamnoside was confirmed as the main flavonoid in the polar extracts. GC-MS analysis identified 20 constituents of the aqueous extract and 28 lipophilic compounds of the n-hexane extract by comparison with authentic standards and spectral library data. The aqueous P. thonningii leaf extract inhibited the IL-8 and IL-6 secretion in TNF-α-stimulated HaCaT cells in a concentration-dependent manner with IC50 values of 74 µg/mL for IL-8 and 89 µg/mL for IL-6. However, an inhibitory effect of the identified quercetin-3-O-rhamnoside and its aglycone, quercetin, on the release of IL-8 and IL-6 could not be demonstrated. In the antimicrobial screening, inhibition zones for a 50% EtOH leaf extract of P. thonningii were found for Staphylococcus epidermidis, Staphylococcus aureus, methicillin-resistant Staphylococcus aureus, and Escherichia coli. For none of the microbial strains, however, the MIC was below 500 µg/mL, so that the antibacterial activity must be classified as low. As a result, our investigations primarily support the ethnomedical use of P. thonningii leaf extracts in topical inflammatory conditions. Further studies are required to identify the compounds responsible for the in vitro anti-inflammatory effects.
The Case of a Serous Borderline Ovarian Tumor in a 15-Year Old Pregnant Adolescent: Sonographic Characteristics and Surgical Management
Authors: Uccella Stefano , Rosa Manuela , Biletta Elena , Tinelli Raffaele , Zorzato Pier C. , Botto-Poala Chiara , Lanzo Gabriele , Gallina Davide , Franchi Massimo P. , Manzoni Paolo
Published: September 2020

Objective This study aimed to describe a rare case of a serous borderline ovarian tumor (BOT) diagnosed during pregnancy in a 15-year old adolescent.

Results The suspect of BOT was raised at a transvaginal ultrasound scan in early first trimester (at 5 weeks of amenorrhea), due to the presence of a moderately vascularized irregular papilla in the context of a unilocular low-level right ovarian cyst. The patient and her parents required termination of pregnancy, irrespective of the diagnosis of an ovarian lesion. After termination of pregnancy, the patient underwent laparoscopic enucleation of the ovarian mass, omentectomy, and peritoneal biopsies. No intra-abdominal spillage of the ovarian mass occurred, and the surgical specimens were put in an endobag and extracted transvaginally. Final pathological examination confirmed the diagnosis of a serous borderline ovarian tumor. The patient of free of disease after 8 months of follow-up.

Conclusion Although rare, borderline ovarian tumors can be diagnosed in an adolescent during pregnancy. The combination of specific sonographic assessment and minimally invasive conservative surgery appears as a very effective approach in this type of patient.

Key Points
Nosocomial Respiratory Viral Infection in the Neonatal Intensive Care Unit
Authors: Vain Nestor E.
Published: September 2020

Infections caused by respiratory viruses in neonates during their stay in the neonatal intensive care unit (NICU) are more frequent than generally suspected. Respiratory syncytial virus (RSV), a highly contagious pathogen, is the most common etiologic agent, and it carries a high risk of nosocomial spread. During the RSV season, overcrowding of the NICU, shortage of staff, and unrestricted visitors are factors predisposing outbreaks. Since signs and symptoms of RSV infections are no specific, a high index of suspicion is essential to prevent or limit epidemics. The etiologic agent should be confirmed and polymerase chain reaction (PCR) is the gold-standard test. Shedding of the virus by infected preterm infants is prolonged and RSV lasts for several hours on countertops and other surfaces. The first case should be isolated and strict cohorting must be instituted. Compliance with hand washing must be warranted. Wearing gowns and gloves may help. The severity of nosocomial RSV infections tends to be higher than that of those community acquired. There is no uniform recommendation to start palivizumab during hospital stay of premature and high-risk infants. The use of this monoclonal antibody to stop or limit the spread of outbreaks is controversial. It is recommended by some professional organizations and not by others but its use during large outbreaks in infants at risk who share the room with infected neonates is not uncommon.

Key Points
Critical Care Thresholds in Children with Bronchiolitis
Authors: Cunningham Steve
Published: September 2020

Reduction in mortality from bronchiolitis in developed health is principally achieved from the availability of critical care. Different health care providers and countries demonstrate considerable variance in admission rates, but globally the use and cost of this resource are increasing. The reasons of this are multifold and include organizational, cultural, and clinical aspects. The organization of care has evolved differently in different health care settings at the threshold of critical need, with local priorities and resources determining the location of care (ward or critical care). Critical care areas adopting high-flow oxygen therapy (HFOT) (a ward-based therapy in some institutions) have seen significant increase in their occupancy, without change in rates of mechanical ventilation. Culturally, some countries appear to have a lower threshold for intubation and mechanical ventilation: United States (18%), Finland (4%), and even in countries with high rates of critical care admission (27% in Australia and New Zealand), intubation rates can decline with time (reducing from 27% to 11%). Baseline clinical characteristics of children admitted to critical care are remarkably similar, children are young (c30–60 days) and often born prematurely (21–46%). Clinical thresholds for admission as predefined by critical care units in online guidance focus on presence of apnea (observed in 7–42% of admissions), low pulse oxygen saturation and subjective measures (exhaustion and reduced consciousness). Clinical characteristics of children at the time of admission are commonly reported in relation to the modified Woods Clinical Asthma Score (mean = 3.8 to ≥7) and raised pCO2 (range = 8.0–8.8 kPa), with pCO2 the only significant parameter in a multivariate analysis of factors associated with intubation.

Key Points
Plaque Psoriasis Successfully Treated with an Individualised Homoeopathic Medicine Lycopodium: A Case Report
Authors: Kanwar Annu , Ram Hanuman , Kumar Narender , Bagdi Navita
Published: September 2020

Introduction Psoriasis is an immune-mediated disease affecting the skin and joints with a prevalence of 0.44 to 2.8% in India. This manifests most often as plaque psoriasis (PP); it is a chronic, relapsing, inflammatory skin disorder with a strong genetic basis. PP is rarely life threatening but it is often intractable to treatment. Here, a 31-year-old male diagnosed with PP presented with a history of multiple reddish moist lesions with thickness and scaling of skin from right forearm, chest, abdomen and back for 3 years. Patient was taking allopathic medications for the same but there was only temporary relief of the complaints. So, patient approached for homeopathic intervention for permanent cure. On the basis of the totality of symptoms and analysis by repertorisation, homoeopathic medicine Lycopodium was prescribed and repetition was done according to the response of medicine and as per the condition of patient, following the principles of homoeopathy. It showed improvement in all complaints, but there was relapse of eruptions after sometime which called for increase in the potency of the Lycopodium (200C & 1M) as per homoeopathic principles. The assessment of patient was done on the basis of Psoriasis Area and Severity Index (PASI) score and photographic evidence. The PASI score of the patient at baseline was 23.4 and it was reduced to 1 after the continuous follow-up of patient for 1 year. Photographs during follow-up visits have provided a documentary evidence about the effectiveness of homoeopathic medicine Lycopodium in plaque psoriasis. Thus, it can be concluded that homoeopathy plays an effective role in managing the cases of PP symptomatically along with complete recovery of the patient.
Frequency of Color Vision Deficiency among Saudi Dental Students: A Cross-Sectional Study
Authors: Alqahtani Najla A. , Togoo Rafi A. , Alqahtani Mashael M. , Suliman Nouf S. , Alasmari Foziah A. , Alqahtani Faris M. , Alshahrani Fahad T.
Published: September 2020

Objective The current research was conducted to evaluate the frequency of color-vision deficiency among dental students of King Khalid University College of Dentistry, Saudi Arabia.

Materials and Methods A cross-sectional study was performed among 203 dental students working as interns at male and female dental clinics of King Khalid University College of Dentistry (KKUCOD), Saudi Arabia. The Ishihara color-vision deficiency (CVD) test with 24 plates was used for diagnosis of the problem. Analysis of the data was done by performing Chi-square tests using SPSS software version 20.

Results The frequency of total CVD was found to be 3.9%. While the association of gender with total CVD was observed to be statistically nonsignificant, a statistically significant relation was drawn with red-green color deficiency. Out of the total of 203 patients, 44 males were identified with red-green color deficiency, whereas only three females were found to have this condition, therefore revealing that CVD is more prevalent in males. Age was found to have a significant association with red-green color vision deficiency, protanopia, and total CVD.

Conclusion A total of 20.19% male dental students had red-green color vision deficiency compared to 1.4% in female students. The dental students must be aware of their congenital color vision deficiency and its impact on their professional life. Screening of such dental students and professionals is quite important so that they can tackle the color vision problems well without having detrimental effect on their future dental practice.
Suturing Fenestration of the Left Subclavian Artery Orifice in Frozen Elephant Trunk Procedure
Authors: Hata Mitsumasa , Wakui Shinji , Ishii Yusuke , Hinoura Rei , Isaka Susumu , Tanaka Masashi
Published: September 2020

The frozen elephant trunk (FET) procedure enables easier replacement of the entire aortic arch because it does not require reaching the distal part of the left subclavian artery (LSCA). However, it requires additional management for reconstruction of the LSCA, which is associated with bleeding events. However, the fenestrated FET technique confers a risk of endoleakage from the fenestration site. We report our unique novel technique in which the proximal side of the hybrid stent graft is cut into V-shape around the subclavian artery and sutured continuously around the orifice of the subclavian artery during aortic stump fixation.
Application of Health Belief Model on Child’s Dental Visit Postponement during the COVID-19 Pandemic
Authors: Setiawan Arlette Suzy , Zubaedah Cucu
Published: September 2020

Objective The aim of this article is to analyze parental perception on child’s dental visit postponement using health belief model (HBM) during the pandemic of COVID-19.

Materials and Methods Cross-sectional survey design was chosen with a purposive sample recruited online by distributing questionnaires consisting 26 items of HBM construct. Data were analyzed descriptively by SPSS version 22.

Result A total 111 respondents participated in the study. Respondents perception were found indifferent in perceived susceptible (X̄ = 3.07), perceived severity (X̄ = 2.99), and perceived barrier (X̄ = 3.38). Whilst confirmed in perceived benefit (X̄ = 2.54), cue of action (X̄ = 2.05), self-efficacy (X̄ = 2.08), and locus of control (X̄ = 2.88).

Conclusion This study provided evidence that HBM is applicable to children's dental visit postponement during the pandemic of COVID-19.
Assessing Safety and Clinical Effectiveness of New Approaches to Planning and Integrated Implementation of Full-Mouth Reconstruction
Authors: Dzalaeva Fatima , Chikunov Sergey , Utyuzh Anatoly , Mikhailova Maria , Budunova Marzhanat
Published: September 2020

Objectives Planning, adequate preparation, and further prosthodontic management are the most important steps in the treatment of this population of patients with dental and mandibular anomalies. The purpose of the article is the improvement of safety and clinical effectiveness of prosthodontic rehabilitation of patients after full-mouth reconstruction.

Materials and Methods A single-center open prospective nonrandomized study, examination, and treatment of 198 patients with partial or total absence of teeth were performed. Higher safety and clinical effectiveness of the treatment were found in the patients of the main group who showed a significant reduction in the rate of complications relative to the comparison group. In the main group, the number of aesthetic defects and cases of repeated prosthetics decreased in comparison with the corresponding occurrence rate of such cases in patient groups.

Results It showed statistically significantly reduction in the rates of occurrence of the complications when using the proposed algorithm: the rate of inflammation of the marginal periodontium and peri-implant tissues in the main group was 2.9 times less frequent and loosening of the supporting implants was 3.9 times less frequent. The rate of polymer chipping or abrasion in the area of the incisal edge or masticatory surface was two times lower in the main group of patients, short crowns were found 1.9 times less often, sores in the area of the dental pontic in the main group were 1.8 times less frequent than in the comparison group, and no fractures of bridgework were found in the main group. The frequency of neuralgic facial pain in the patients of the main group was 5.2 times less than in the comparison group, complaints about pain in the temporomandibular joint area were 8.4 times less frequent, increased abrasion of antagonist teeth was 3.9 times less frequent, and phonetics disorders were 8.4 times less frequent.

The effectiveness of the algorithm developed by us is also confirmed by the fact that the number of aesthetic defects and cases of the need for repeated prosthetic treatment was reduced in comparison with the corresponding frequency of such cases in groups of patients where standard approaches to prosthetics were applied. In particular, aesthetic defects found in the main group of patients were 2.5 times less frequent than in the comparison group, and repeated prosthetics was performed 2.7 times less frequently.

Conclusion Application of the developed comprehensive approach to planning of prosthodontic rehabilitation provides for significant reduction in the frequency of complications and aesthetic defects, as well as cases of repeated need for prosthetics.
Zinc Status and Febrile Seizures: Results from a Cross-sectional Study
Authors: Arul Janani , Kommu Peter Prasanth Kumar , Kasinathan Ananthanarayanan , Ray Lopamudhra , Krishnan Lalitha
Published: September 2020

Objective To estimate the serum zinc levels in children under the age of 5 years with febrile seizures and febrile children without seizures

Materials and Methods In this cross-sectional study from 2017 to 2018, 40 children with febrile seizures (simple and complex) were taken as cases. Forty age- and sex-matched febrile children without convulsions were recruited as controls. Serum zinc estimates were analyzed using a spectrophotometer (Biolis 50i–Autoanalyzer).

Statistical Analysis The demographic variables and serum zinc estimates were analyzed using the Mann–Whitney test. The odds ratio was used to calculate the association of zinc deficiency in febrile seizures; 5% level of significance was considered.

Results The mean serum concentrations of zinc in the cases and controls were 83.8 ± 33.1 μg/dL and 116.3 ± 30.3 μg/dL, respectively (p = 0.002). Hypozincemia defined by “a serum zinc level of less than 63 μg/dL” was found in 12 (30%) cases and 2(5%) controls with an odds ratio of 8:1.

Conclusion Children with febrile seizures had significantly reduced concentrations of zinc in the serum.
Breastfeeding in COVID-19: A Pragmatic Approach
Authors: Ng Yvonne Peng Mei , Low Yi Fen , Goh Xin Lei , Fok Doris , Amin Zubair
Published: September 2020

The novel coronavirus disease 2019 (COVID-19) pandemic has resulted in changes to perinatal and neonatal care, concentrating on minimizing risks of transmission to the newborn and health care staff while ensuring medical care is not compromised for both mother and infant. Current recommendations on infant care and feeding when mother has COVID-19 ranges from mother–infant separation and avoidance of human milk feeding, to initiation of early skin-to-skin contact and direct breastfeeding. Health care providers fearing risks of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) maternal–infant transmission may veer toward restricted breastfeeding practices. We reviewed guidelines and published literature and propose three options for infant feeding depending on various scenarios. Option A involves direct breastfeeding with the infant being cared for by the mother or caregiver. In option B, the infant is cared for by another caregiver and receives mother's expressed milk. In the third option, the infant is not breastfed directly and does not receive mother's expressed milk. We recommend joint decision making by parents and the health care team. This decision is also flexible as situation changes. We also provide a framework for counseling mothers on these options using a visual aid and a corresponding structured training program for health care providers. Future research questions are also proposed. We conclude that evidence and knowledge about COVID-19 and breastfeeding are still evolving. Our options can provide a quick and flexible reference guide that can be adapted to local needs.

Key Points
Drug-Induced Lupus Erythematosus Associated with Proton Pump Inhibitor
Authors: Chinnusamy Manokaran , Viswanathan Ram Arvind , Janakiraman Sathiyanarayanan , Elayidath Roshna
Published: September 2020

Drug-induced lupus erythematosus is an autoimmune phenomenon where the drug exposure leads to the development of systemic lupus erythematous like clinical features. Drug-induced lupus erythematosus can be divided into systemic lupus erythematous, subacute cutaneous lupus erythematous, and chronic cutaneous lupus erythematous. Here, we report a case of a 29-year-old female presented with systemic lupus erythematous due to chronic use of proton pump inhibitors, which is considered to be very rare.
Social Software for Business Process Modeling
Authors: Koschmider Agnes , Song Minseok , Reijers Hajo A
Published: September 2020

Formal models of business processes are used for a variety of purposes. But where the elicitation of the characteristics of a business process usually takes place in a collaborative fashion, the building of the final, formal process model is done mostly by a single person. This article presents the design and Implementation of a Recommendation-Based Process Modeling Support System with ‘social features.’ A process builder using this system will receive recommendations to complete or edit a formal business process model on the basis of previous usage of modeling fragments by her peers. Such features potentially Improve the modeling process and, as such, the modeling outcome, that is, the quality of the process model. This article also contains an evaluation of the system's usage and effectiveness, which builds on an experimental design. It is shown that process builders are inclined to follow up on the provided recommendations and that this will improve the semantical quality of the created model. However, Information on peer usage of modeling fragments does not play a big role in selecting the recommendations being followed up. This article fits within a stream of research that puts emphasis on the modeling process, rather than on the model artifact.
Limitations to Building Institutional Trustworthiness through E-Government: A Comparative Study of Two E-Services in Chile
Authors: Smith Matthew L
Published: September 2020

There is much interest in the application of new information and communication technologies (ICTs) to improve the quality, performance, and responsiveness of public sector Institutions thereby potentially Improving trust. However, there is little empirical evidence about the interaction of ICT Implementations on institutional trust of the public sector. This article extends our understanding of the interplay of ICTs in the public sector and Institutional trust through an in-depth comparative case-study of two successful Chilean e-servlces. The article begins by developing a relational conception of institutional trust of which Institutional trustworthiness is a component of that relationship. It then analyses the two cases separately with respect to three dimensions of institutional trustworthiness: good performance, aligned incentives, and the values of fairness and distributive justice. Following this, a comparative analysis of the two cases shows that while the implementation of technology may bring anticipated efficiency, effectiveness, and transparency gains, there are fundamental limitations to improving institutional trustworthiness through technological interventions. In particular, where points of discretion and ambiguity remain, or power asymmetries are exacerbated, trustworthiness is challenged. Furthermore, drawing on the cases and the relational conception of institutional trust, the article argues that enhancing trustworthiness is a constrained optimisation problem in an environment of competing and often conflicting values.
Machine learning formation enthalpies of intermetallics
Authors: Zhang Zhaohan , Li Mu , Flores Katharine , Mishra Rohan
Published: September 2020

Developing fast and accurate methods to discover intermetallic compounds is relevant for alloy design. While density-functional-theory (DFT)-based methods have accelerated design of binary and ternary alloys by providing rapid access to the energy and properties of the stable intermetallics, they are not amenable for rapidly screening the vast combinatorial space of multi-principal element alloys (MPEAs). Here, a machine-learning model is presented for predicting the formation enthalpy of binary intermetallics and is used to identify new ones. The model uses easily accessible elemental properties as descriptors and has a mean absolute error of 0.025 eV/atom in predicting the formation enthalpy of stable binary intermetallics reported in the Materials Project database. The model further predicts stable intermetallics to form in 112 binary alloy systems that do not have any stable intermetallics reported in the Materials Project database. DFT calculations confirm one such stable intermetallic identified by the model, NbV2, to be on the convex hull. Furthermore, an adaptive transfer learning method is used to generalize the model to predict ternary intermetallics with a similar accuracy as DFT, which suggests that it could be extended to identify compositionally complex intermetallics that may form in MPEAs.
Microglia-targeting nanotherapeutics for neurodegenerative diseases
Authors: Zhao Nanxia , Francis Nicola L. , Calvelli Hannah R. , Moghe Prabhas V.
Published: September 2020

Advances in nanotechnology have enabled the design of nanotherapeutic platforms that could address the challenges of targeted delivery of active therapeutic agents to the central nervous system (CNS). While the majority of previous research studies on CNS nanotherapeutics have focused on neurons and endothelial cells, the predominant resident immune cells of the CNS, microglia, are also emerging as a promising cellular target for neurodegeneration considering their prominent role in neuroinflammation. Under normal physiological conditions, microglia protect neurons by removing pathological agents. However, long-term exposure of microglia to stimulants will cause sustained activation and lead to neuronal damage due to the release of pro-inflammatory agents, resulting in neuroinflammation and neurodegeneration. This Perspective highlights criteria to be considered when designing microglia-targeting nanotherapeutics for the treatment of neurodegenerative disorders. These criteria include conjugating specific microglial receptor-targeting ligands or peptides to the nanoparticle surface to achieve targeted delivery, leveraging microglial phagocytic properties, and utilizing biocompatible and biodegradable nanomaterials with low immune reactivity and neurotoxicity. In addition, certain therapeutic agents for the controlled inhibition of toxic protein aggregation and for modulation of microglial activation pathways can also be incorporated within the nanoparticle structure without compromising stability. Overall, considering the multifaceted disease mechanisms of neurodegeneration, microglia-targeted nanodrugs and nanotherapeutic particles may have the potential to resolve multiple pathological determinants of the disease and to guide a shift in the microglial phenotype spectrum toward a more neuroprotective state.
An improved cooling system design to enhance energy efficiency of floating photovoltaic systems
Authors: Sheikh Y. A. , Butt A. D. , Paracha K. N. , Awan A. B. , Bhatti A. R. , Zubair M.
Published: September 2020

This work presents a lightweight and minimally invasive cooling system design with forced water cooling, which can improve photovoltaic (PV) system performance by thoroughly reducing the temperature of its solar cells. This design is an improved version of traditional PV-thermal cooling systems that are bulky and mostly limited to land-based applications. Thermal and fluid flow analyses of this system have been presented to numerically assess output efficiency improvement with a commercial solar panel. The proposed serpentine cooling block structure has been optimized to maintain module efficiency better than Standard Testing Conditions (STC) under all conditions. For a 395 W commercial solar panel, an output power improvement of up to 49.4 W (14.29%) at an irradiance level of 1000 W/m2 at an ambient temperature of 35 °C has been achieved. The corresponding water pump operation and associated losses are limited to a maximum of 8.5 W/module. The impact of cooling system performance has also been evaluated for the region of Mangla Dam Lake, Pakistan, where an annual increase in electricity output of around 9.58% is foreseen. Consequently, this work is envisioned to provide guidance on increasing the efficiency of the PV system to those who would install it near water reservoirs.
Tunable microwave-photonic filtering with high out-of-band rejection in silicon
Authors: Gertler Shai , Kittlaus Eric A. , Otterstrom Nils T. , Rakich Peter T.
Published: September 2020

The ever-increasing demand for high speed and large bandwidth has made photonic systems a leading candidate for the next generation of telecommunication and radar technologies. The photonic platform enables high performance while maintaining a small footprint and provides a natural interface with fiber optics for signal transmission. However, producing sharp, narrow-band filters that are competitive with RF components has remained challenging. In this paper, we demonstrate all-silicon RF-photonic multi-pole filters with ∼100× higher spectral resolution than previously possible in silicon photonics. This enhanced performance is achieved utilizing engineered Brillouin interactions to access long-lived phonons, greatly extending the available coherence times in silicon. This Brillouin-based optomechanical system enables ultra-narrow (3.5 MHz) multi-pole response that can be tuned over a wide (∼10 GHz) spectral band. We accomplish this in an all-silicon optomechanical waveguide system, using CMOS-compatible fabrication techniques. In addition to bringing greatly enhanced performance to silicon photonics, we demonstrate reliability and robustness, necessary to transition silicon-based optomechanical technologies from the scientific bench-top to high-impact field-deployable technologies.