bluuebunny/crossref_metadata_2025 huggingface dataset:
Enhanced Thermal Characteristics of NG Based Acetamide Composites
Authors:   Amity Institute of Renewable and Alternate Energy (AIRAE), Amity University, Noida, India., Yadav Apurv , Verma Abhishek ,   AIRAE and Amity Institute for Advanced Research and Studies (Materials & Devices) [AIARS (M&D], Amity University, Noida, India., Bhatnagar P.K. ,   Department of Electronic Science, Delhi University, New Delhi, India., Jain V.K. ,   AIARS (M&D) and AIRAE, Amity University, Noida, India., Kumar Vivek ,   AIARS (M&D) and AIRAE, Amity University, Noida, India.
Published: August 2019

Fatty acids are a distinguished category of phase change materials (PCM). However, their inferior thermal conductivity value restricts their potential for thermal energy storage system. Carbonaceous nanomaterials have emerged as promising thermal conductivity enhancer materials for organic PCMs. The present study focuses on preparing a novel PCM nanocomposite comprising of small amount of nanographite (NG) in molten acetamide, an organic PCM, for elevation of the thermal characteristics and examining the trend of the nanocomposite through the course of charging / discharging process. These PCM-nanocomposites are prepared by dispersing NG in molten acetamide with weight fractions of 0.1, 0.2, 0.3, 0.4 and 0.5 %. The scanning electronic microscopic (SEM) analysis was conducted for the characterization of PCM nanocomposite. The energy storage behaviour of the prepared nanocomposites were analyzed with the help of differential scanning calorimeter instruments, which showed that there is no observable variation in the melting point of the nanocomposite, and a decline in the latent heat values. Furthermore, thermal conductivity trend of the nanocomposites caused by NG addition was investigated, which indicated enhancement of thermal conductivity with increasing NG concentration. Further, nanocomposites with a 0.4 wt. % of NG, displayed appreciable increase in rate of heat transfer, reducing melting time and solidification time by 48 and 47 %, respectively. The prepared PCM nanocomposites displayed superior heat transfer trend, permitting substantial thermal energy storage.
Measurement of Thickness of Foam layer and Entrance Region in a Bubble Column using Image Processing Technique
Authors:   Department of Chemical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University) Varanasi, India., Agarwal Neha , Verma Ashok Kumar ,   Department of Chemical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University) Varanasi, India.
Published: August 2019

Photographic method is a direct method for study of bubble behavior. Hydrodynamic study in a rectangular bubble column (0.37m X 0.2m X 0.02m) for air-water system was studied using photographic technique by recording movie at 120fps. Image processing tools were applied to measure regions of gas-liquid dispersion, entrance, foam layer and bubble-bursting were identified. The foam layer thickness showed maxima at Ug = 0.1 m s-1. It decreased with increasing static bed height. The width of entry region also passed through maxima, though it was not sharp. The width of entry region increased with increasing settled bed height. Gas holdup measured in terms of pixel density deviated from experimental values with increasing superficial gas velocity due to overlapping bubbles. The average gas holdup decreased with increasing static bed height.
Symmetric Cryptographic Framework for Network Security
Authors:   Alagappa University, Karaikudi,India., Narayanasamy Kanagaraj , Arumugam Padmapriya ,   Alagappa University, Karaikudi, India.
Published: August 2019

In this rapidly developing digital environment, a single cryptographic algorithm becomes inefficient and incapable to hold the secrecy of data. A symmetric cryptographic framework is proposed which provides the platform for using the existing and future algorithms in a secured manner. In this research paper, totally six algorithms have been taken into the framework, two algorithms for text, three algorithms for image, and one algorithm for video. The algorithms are grouped into the proposed symmetric encryption framework which provides better network security for the adopted environment. Cryptanalysis and brute force attack have been done to assess the strength of the algorithms incorporated in the framework. Character repetition frequency and brute force attack are analyzed for text encryption algorithms. Mean values, Entropy measure, Differential attack and brute force attack are analyzed and used to assess the reliability of the image and video encryption algorithms. The framework is designed in such a way to adopt the existing and future algorithms. The proposed framework provides a bridge to achieve quality, upgradability, maintainability, and longer usability in applied applications..
TB Diagnosis System using Genetic Particle Swarm Optimization Based Neural Network Classifier
Authors:   pursing PhD in JNTUK ,Kakinada, Andhra Pradesh, India., Kumari Mrs. P.Prasanna , Rao Dr. B. Prabhakara ,   Program Director of IST, JNTUK, Kakinada, India
Published: August 2019

Classification of medical image is an important task in the diagnosis of any disease. It even helps doctors in their diagnosis decisions. Tuberculosis (TB) is a disease caused by bacteria called Mycobacterium tuberculosis. Recently, several techniques are applied to diagnosis the TB diseases. Unfortunately, diagnosing TB is still a major challenge. Therefore, in this paper an efficient Tuberculosis diagnosis system is proposed using Multi Kernel Fuzzy C Means Rough Set (MKFCMRS) based feature selection and optimal neural network classifier. Our proposed method comprised of four stages namely, feature extraction, feature selection, classification and Region identification. Initially the TB images are extracted from the given input database and that each of the input images are given to feature extraction process, in which statistical, structural and gray level dependent features are extracted. After that, the feature selection scheme is carried out through multi-kernel FCM based rough-set theory. Then, selected features are given to optimal neural network classifier to optimize the weight values of the neural network. In this work proposed classifier is Particle Genetic Swarm Neural Network classifier (GPSO-NN) which Integrates the characteristics of both genetic and particle swarm methods. The proposed system is implemented in the working platform of MATLAB. Compared to previous method our proposed technique is improved in terms of accuracy, sensitivity and specificity.
Aspect Based Mobile Recommendation System
Authors:   ME student in Computer Science and Engineering Department of Government College of Engineering Aurangabad, Bawiskar Mokshali , Injamuri Vijayshri ,   Assistant Professor in Computer Science and Engineering Department of Government College of Engineering Aurangabad
Published: August 2019

Now-a-days, there is a trend of changing mobile phone models in very short duration. To achieve benefit of choosing a mobile phone satisfying our requirements, mobile phone recommendation system is of great importance. As we know, there are many web sites that provide number of reviews and ratings for each and every mobile phone model available in market. From this, we can understand the consumer opinions and reviews about any mobile product. Existing systems were based on complete review of product as good or bad. But, there is need to have a way with which we can review the product with view of each aspect such as camera, battery, look etc. For this, we have developed a system which provides a recommendation of mobile phone model by considering aspects with user’s choice. For this, we have used reviews, ratings provided by group of users on social website, Amazon. The data is collected with the use of “Octoparse”, a web scraping software and the text data collected is analyzed using Stanford's CoreNLP for sentiment analysis. Our approach provides recommendation, considering user provided aspects (i.e. camera, battery, look etc.) with the use of apache mahout and hybrid recommendation. Our approach showed outstanding performance for mobile phone recommendation.
Technological advances in medical education in intensive care
Authors: Sholjakova Marija V.
Published: August 2019

The rapid development of advances in technology made a deep impact to the medical education causing changes in teaching. Technological advances in medicine, especially in intensive care settings, opened new opportunities and challenges to ensure quality training education of residents.The laws in most of the countries in the world do not allow practicing new skills on patients, which compel the trainees in use of technical support to enhance medical practical knowledge and skills. With the aim to increase the efficiency and safety, technological tools become integral part of intensive care educative process. There are numerous technological advances that may be used as educational tools in intensive care, as Computer-aided learning, Virtual Patients Human and Patient Simulation. As part of a multimodal concept, simulator-based training may facilitate an improvement of quality of care and patient safety.Citation: Sholjakova MV. Technological advances in medical education in intensive care. Anaesth. pain & intensive care 2019;23(2):119-123
Intraoperative superior hypogastric plexus block for postoperative pain following gynecological laparotomies
Authors: Subramanian Vigneshwaran , Aggarwal Shipra , Kale Suniti , Parthasarathy Anand H , Batra Aruna
Published: August 2019

Background & Objectives: The superior hypogastric plexus block (SHPB) has been extensively used for treating pelvic cancer pain and chronic pelvic pain, but not as a modality of postoperative analgesia. Currently, postoperative analgesia following gynecological laparotomies is managed mainly by parenteral NSAIDS, opioids or by epidural block. We propose that the intraoperative superior hypogastric plexus block could be a safe and an effective method for managing postoperative pain in patientsundergoing gynecological laparotomies.Methodology: It was a prospective randomized case control study. Sixty female patients of ages 18-60 y belonging to ASA grade 1 and 2 undergoing gynecological laparotomies were allocated equally into two groups, study and control group. Both groups received general anesthesia. At the end of surgery, the Study Group received. Postoperative pain was assessed with VAS score, patient’s vital parameters and amount of morphine consumed by patient controlled analgesia at 0, 2, 6, 12, 24 and 48 h.Results: The VAS score for pain showed significant difference between Study Group and Control Group at 0 h (p = 0.033), 2 h (p < 0.0001), 6 h (p < 0.0001), 12 h (p < 0.0001) and 24 h (p = 0.003) but not at 48 h (p = 0.085). This showed that the block was more effective up to 24 h. There was significant difference of 33.6% (p < 0.0001) in morphine consumption between study (36.03 mg) and control (54.33 mg) groups.Conclusions: We conclude that superior hypogastric plexus block is a simple, safe and effective without any major complications and has a short learning curve. It has a high success rate for majority of gynecological laparotomies.Citation: Subramanian V, Aggarwal S, Kale S, Parthasarathy AH, Batra A. Intraoperative superior hypogastric plexus block for postoperative pain following gynecological laparotomies. Anaesth. pain & intensive care 2019;23(2):157-161
A randomized double blind study to compare 1% 2-chloroprocaine and 0.5% hyperbaric bupivacaine in spinal anesthesia for infra-umbilical surgeries
Authors: Khare Arvind , Thada Beena , Yadav Devraj
Published: August 2019

Background: Spinal anesthesia is a reliable and safe technique for infra-umbilical surgeries. Preservative-free 2-chloroprocaine has re-emerged for use in spinal anesthesia. We compared onset and duration of sensory block with intrathecal use of 1% 2-chloroprocaine (30 mg) or 0.5% Hyperbaric Bupivacaine (15 mg) as primary objective. Secondary objectives being onset and duration of motor block, duration of analgesia, time to return of voiding function, hemodynamic parameters and side effects.Methodology: 90 patients of age group 18-60 years, either sex, belonging to ASA physical status I/II undergoing infra-umbilical surgeries were randomly divided into two groups, 1% 2-chloroprocaine Group A (n=45) and 0.5% hyperbaric bupivacaine Group B (n=45). Each group received intrathecally either 30 mg of 2-chloroprocaine or 15 mg of hyperbaric bupivacaine 15 mg. For statistical analysis unpaired-t-test and chi-square test were used.Results: Earlier onset and shorter duration of sensory block were observed in Group A as compared to Group B respectively (p < 0.001). Similarly, onset was earlier and duration of motor block, duration of analgesia and time to return of voiding function were shorter in Group A as compared to Group B respectively (p < 0.001). Hemodynamic parameters (HR, MAP) were comparable in both groups.Conclusion: Intrathecal 1% 2-chloroprocaine 30 mg provides spinal anesthesia of adequate duration for infra-umbilical surgeries with the advantage of earlier onset and faster regression of spinal block resulting in earlier voiding with stable hemodynamics as compared to 0.5% hyperbaric bupivacaine 15 mg.Citation: Khare A, Thada B, Yadav D, Mathur V, Singh M. A randomized double blind study to compare 1% 2-chloroprocaine and 0.5% hyperbaric bupivacaine in spinal anesthesia for infra-umbilical surgeries. Anaesth. pain & intensive care 2019;23(2):162-167
A Comparative study of the administration of a single bolus of ketamine versus bolus administration followed by continuous infusion in the management of traumatic limb pain in a low income country
Authors: TRAORE IBRAHIM ALAIN , KI BERTILLE KELAN , ILBOUDO CHARLES SOMBEWENDIN , GUIBLA ISMAEL
Published: August 2019

Introduction

Ketamine has proven its analgesic efficacy in the management of pain due to limb trauma. There is still doubt about how to integrate ketamine into medical practice in emergency departments, including continuous infusion and bolus. The aim of this study is to compare the efficacy of ketamine administered in a single bolus with ketamine administered in a bolus relayed by a continuous infusion on traumatic limb in a context of under-equipment

Methods

This was a randomized, double-blind clinical trial. It took place at Ouahigouya teaching hospital  over a three-month period. Any adult patient aged 18 to 65 admitted to the emergency room for limb trauma with severe pain ≥ 7 on a numerical scale (EN) was included in the study. Patients were randomized into two groups. Group 1 received a bolus of ketamine relayed by continuous infusion and group 2 received a bolus of ketamine relayed by isotonic saline infusion. The main endpoint was total morphine consumption at the end of treatment (maximum 60 minutes).

Results

A total of 66 patients were included; 33 in each group. The groups were statistically comparable. There was no significant difference between the two groups in morphine requirements. Indeed, 27.27% of Group 1 patients and 21.21% of Group 2 patients used morphine to relieve their pain (p = 0.29).The average dose of morphine received at the end of management (T + 60 minutes) was 6 ± 2.6 mg in Group 1 and 5.14 ± 1.46 mg in Group 2. There was no significant difference between these doses (p = 0.44). No serious side effects were noted in either group. The patient satisfaction index was on average 7.24 ± 0.75 and 7.3 ± 0.77 respectively in Group 1 and 2 (not significant difference p = 0.74).

Conclusion

The administration of ketamine as a single bolus is as effective as the bolus followed by continuous infusion. It is therefore up to practitioners to develop protocols for the safe use of this molecule, which will undoubtedly contribute to improving pain management in emergency departments, especially those in low income countries.
Pre-anesthesia clinic: skip it or not? A case report
Authors: Abdullah Amr , Fouad Amir , Esmat Ahmed Mamdouh , Elhefnawy Ali
Published: August 2019

We present a rare case of papillary fibroelastoma (PFE) of the aortic valve diagnosed after being referred from a pre-anesthesia clinic. This patient presented in preanesthesia clinic for assessment prior to right total knee replacement. Along with other investigations, echocardiography was ordered as the patient had a previous history of ischemic heart disease with angioplasty. There was no previous echocardiogram (ECHO) in the patient records. An incidental finding of a sclerotic aortic valve with highly mobile mass was seen attached to the right coronary cusp on the aortic side with same echogenicity as the valve. Based on this rare finding, the patient was referred to an interventional cardiac center prior to an elective orthopedic surgery.Citation: Abdullah A, Fouad A, Esmat AM, Elhefnawy A, Adeel S. Pre-anesthesia clinic: skip it or not? A case report. Anaesth. pain & intensive care 2019;23(2):221-224
Post-herpetic neuralgia in elderly: can topical capsaicin 8% patch be considered as first-line therapy?
Authors: Raheel Minhas Muhammad , Aboalkhair Abdullah , Alghamdi Hani Hazza
Published: August 2019

Post-Herpetic Neuralgia (PHN) is a painful and debilitating complication of Herpes Zoster or Shingles (HZ). HZ is caused by reactivation of Varicella-Zoster Virus (VZV) and manifests as painful skin rash. Persistent pain for three or more months after the healing of HZ rash is termed as PHN. Elderly patients are more susceptible to develop HZ due to age related decline in immunity, a factor attributed to the reactivation of VZV residing in Dorsal Root Ganglion (DRG) after the first exposure. Older age, increased rash severity, severe pain, and female sex are some of the major risk factors for developing PHN following HZ. The risk of having PHN is five times higher in older adults of more than 80 years age while more than 50% of adults older than 70 years with HZ may develop PHN. Treatment of PHN in elderly is a complex and challenging task. The risk of serious adverse events with oral medications is high due to factors such as polypharmacy for multi morbidity (drug interaction) and altered pharmacodynamic and pharmacokinetic profile (unexpected response, delayed clearance, etc.). Topical Capsaicin 8% patch is a safe and effective therapy for PHN in elderly patients. It significantly reduces pain for months after single application for 60 minutes and well tolerated even on repeated applications. Capsaicin 8% minimally absorbed into systemic circulation and rapidly metabolized in the liver, therefore the risk of drug interaction is negligible. The pharmacokinetic and pharmacodynamic properties of Capsaicin 8% patch make it a suitable choice to be considered as first line therapy of PHN in elderly patients.Citation: Minhas MR, Aboalkhair A, Alghamdi HH. Post-herpetic neuralgia in elderly: can topical capsaicin 8% patch be considered as first-line. Anaesth. pain & intensive care 2019;23(1)225-230
Masalah Kecelaruan Tingkah Laku: Masalah Ponteng Sekolah
Authors: Lukman Hakim bin Mohamad Amin
Published: August 2019

Ponteng sekolah merupakan salah satu masalah disiplin yang semakin ketara. Terdapat pelbagai faktor-faktor yang menyebabkan pelajar-pelajar terlibat dengan gejala ponteng sekolah dimana ianya berpunca daripada guru, sikap pelajar, rakan sebaya dan juga ibu bapa dimana mereka banyak mempengaruhi pelajar-pelajar terlibat dengan gejala ponteng sekolah.  Masalah ponteng tidak boleh dipandang remeh kerana kemungkinan pelajar yang ponteng akan dipergunakan oleh anasir-anasir negatif untuk melakukan sesuatu yang membahayakan masyarakat. Masalah ini perlulah diatasi dengan segera bagi mengelakkan daripada timbulnya pelbagai gejala buruk yang lain rentetan daripada perilaku ponteng. Objektif kajian ini iaitu untuk mengenal pasti apakah punca-punca yang menyebabkan pelajar mengambil tindakan untuk tidak hadir ke sekolah atau dipanggil ponteng, untuk mengenal pasti kekerapan pelajar yang terlibat dalam gejala ponteng sekolah, mengetahui dengan lebih terperinci cara-cara untuk mengatasi gejala ponteng sekolah yang semakin berleluasa di kalangan pelajar sekolah, dan mendedahkan kesan dan akibat yang akan diterima akibat daripada gelaja ponteng sekolah. Dapatan kajian dari hasil temu bual, faktor ibu bapa ialah faktor yang utama sekali dalam mengawal anak – anak mereka. Termasuk guru juga, sebagai pembimbing pelajar – pelajar di sekolah dalam membantu berkaitan tentang pelajaran mahupun masalah keluarga yang dihadapi oleh pelajar tersebut.
Smart Cane based on IoT
Authors: Faiz Bin Abdul Ghani
Published: August 2019

Generally, blind people use a traditional cane (known as white cane) for moving from one place to another. Although, white cane is the international symbol of blindness, it could not help them to detect place and to avoid obstacles. In this paper, we represent a model of walking stick for blind people. It consists of GPS module, GPS Antenna, Arduino, ultrasonic sensor and buzzer. This stick can detect place and obstacles. Position detection part is done with GPS module and GPS antenna. Ultrasonic sensor is used for detecting obstacles. Here, the buzzer produces two types of sound. When the blind reaches to his destination, buzzer buzzes continuously. When the blind faces any obstacles, buzzer buzzes with interruption. By discovering these two types of sound, blind can be confirmed about his destination and also can avoid obstacles in front of him. The whole system is designed to be small, light and is used in conjunction with the white cane so that it could ensure safety of the blind.
The Inference System for Fault Diagnosis
Authors: Hong Yongeui , Lee Taewoo , Rho Kyoungdyuk , Cha Hyun-Seung , Lee Jonghyo
Published: August 2019

A knowledge-based fault diagnosis system uses prior knowledge and context knowledge for prediction to improve fault diagnosis performance. The proposed representative fault diagnosis system consists of three levels. With this structure, fault diagnosis can be flexibly performed even in a complicated environment. The three-level consists of the fault diagnosis level, the learning level, and the information processing level. The Fault diagnosis level is able to express the correlation by using the data obtained from the controller and diagnose the fault by logically inferring it. The learning level links the logical language perceived by humans and the numerical data processed by the computer, and keeps it consistent with the situation. The information processing level acquires the feature value required by the higher level in the candidate region among the numerous data obtained from the controller and sends it to the higher level. The proposed algorithm can effectively diagnosis faults by using additional prior knowledge and situation data.
Advanced Modelling of KF Implemented Flying Wing
Authors: Dakshina Widanalage , Fernando Thiwanka
Published: August 2019

This research carries out the advanced phase in correlation with the previous published design of KF Implemented Flying Wing. At the primary stage the basic design was considered under omission of non-static components and turbulent conditions. At this stage the simulations have taken a step ahead with improved flow conditions and advanced modeling of the design. As per the design aspects the engines, pylons, landing gears and shape improvements were done with solid modeling. Due to the computational limitations this was divided in to two phases as cruising conditions with non-static components and further studies to be carried out in Takeoff and Landing conditions with extended landing gears. Under the stability and control conditions a separate research is being carried out in achieving the optimum capability. Propfan engine selected for extreme condition evaluations. The implementations were made without disrupting the base design which was presented in phase one basic simulation carried out prior to this. The simulation results deemed to be promising for the first stage as well as the effect of new components. The secondary target areas are to be carried out in further ongoing research as well
Fire Proof Quality of Metal Structures: A case study at the Algerian
Complex Ourhoud
Authors: Souad Marref , Damascene John , Abeysekera A.
Published: August 2019

This article reflects an investigation into the use of passive protection against the fire based on the concept of fireproofing. The use of this technique obeys to international standards especially the 2218 API used as reference in order to achieve the purposes of this approach; Indeed the present study attests to the methodology of the fireproofing used at the complex "Ourhoud" and to the identified discrepancies at some of its installations and this in comparison to the recommendations of the standard and the requirements of the safety philosophy of this project.
Revista Vol 8 No 6. Fortalecimiento educativo y pedagógico e inclusión
Authors: Hernández Prados Maria Angeles
Published: August 2019

El actual número 8/8 de la Revista Boletín Redipe recoge algunas reflexiones y sistematización de ideas para favorecer los procesos educativos y formativos, en particular frente a lo que se está haciendo mal en educación. Es el caso de los trabajos aportados por los colegas Agustín de la Herrán Gascón - Javier M. Valle López, Universidad Autónoma de Madrid; José Luis Villena Higueras, Universidad de Granada.

Asimismo, el artículo de los colegas Israel Alonso-Saéz, Aitor Garagarza, Karmele Artetxe y Nekane Beloki, Universidad del Pais Vasco. También recoge dos importantes trabajos sobre educación inclusiva, uno de corte epistemológico elborado por el académico chileno Aldo ocampo, y otro desde la teoría de sistemas postulado por la académica argentina María Eugenia Picco, Universidad Nacional de Villa María.
Komunikasi Pemasaran Sebagai Metode Promosi untuk Usaha Kecil Menengah
Authors: Gurmilang Adhi
Published: August 2019

Seorang wirausahawan merakit dan menyatukan semua sumber daya yang dibutuhkan yaitu uang, manusia, model bisnis, strategi dan kemampuan untuk mengambil risiko untuk mengubah temuan baru menjadi sebuah bisnis yang dapat dilaksanakan. Sebuah bisnis mengacu kepada sebuah bauran pemasaran yang terdiri dari produk, harga, tempat dan promosi. Sebagai bauran pemasaran, promosi memiki beberapa tantangan terhadap efektivitas dan efisiensi pesan pemasaran yang ingin disampaikan. Untuk itu, muncul konsep komunikasi pemasaran terpadu yang menggabungkan beberapa taktik komunikasi pemasaran menjadi terpadu untuk meningkatkan efektivitas dan efisiensi pesan pemasaran. Pengetahuan, pemahaman dan pelaksanaan komunikasi pemasaran terpadu akan membantu seorang wirausawahan untuk membantu pemasaran merek yang dimilikinya. Tulisan ini bertujuan untuk melakukan kajian teoritis antara kewirausahaan dan komunikasi pemasaran terpadu sebagai metode promosi pemasaran. Apabila dilakukan dengan komprehensif, komunikasi pemasaran terpadu akan membantu seorang wirausahawan untuk membantu ia memperkenalkan, membentuk kesan positif dan mempertahankan pelanggannya terhadap merek yang dimilikinya.Kata kuci: Komunikasi, Pemasaran, Wirausaha
Perilaku Berbagi Pengetahuan Antar Pelaku Wirausaha di Ruang Kerja Bersama
Authors: Soerjoatmodjo Gita Widya Laksmini
Published: August 2019

Seiring dengan perkembangan zaman, perilaku bekerja (work behavior) mengalami perubahan sehingga memunculkan apa yang dikenal sebagai cara-cara kerja baru (new ways of working), termasuk di kalangan pelaku wirausaha (entrepreneurs).Salah satu fenomena baru terkait dengan hal ini adalah tumbuhnya ruang kerja bersama (co-working space) yang mendorong perilaku berbagi pengetahuan (knowledge sharing), salah satu elemen penting dalam pengelolaan pengetahuan (knowledge management). Tulisan ini bertujuan menyintesiskan teori-teori tentang perilaku berbagi pengetahuan pada pelaku wirausaha di ruang kerja bersama.Kata kunci: kewirausahaan, ruang kerja bersama, perilaku berbagi pengetahuan.
Pembelajaran Berbasis Teknologi Untuk Generasi Z
Authors: Yusuf Eddy
Published: August 2019

Makalah ini membahas sebuah strategi pembelajaran berbasis teknologi yang diperlukan untuk menghadapi generasi Z. Tablet berbasis android dengan perangkat lunak Speedy Spectrum Analyzer digunakan untuk menjelaskan materi gelombang stasioner pada mata pelajaran Fisika kelas XII. Titik berat dari penerapan teknologi ini dalam pembelajaran adalah 1) kemudahan untuk mendapatkan perangkat yang digunakan dan 2) keakuratan hasil yang diperoleh dari perangkat ini. Penggunaan teknologi ini diharapkan mempertajam konsep dan sekaligus mengikis miskonsepsi siswa dalam materi gelombang stasioner.Kata Kunci : generasi Z, gelombang stasioner, fisika, teknologi, tablet, android
Improvement on the Strength of 6063 Aluminum Alloy by Means of Warm Rolling Operation
Authors: Adekunle N. O. , Aiyedun P. O. , Kuye S. I. , Lawal I. O.
Published: August 2019

This paper presents the effect of varying processing variables on the superplastic ductility of Al 6063 alloy. The three variables investigated were total strain, reheating time and strain rate during warm rolling (by varying the reduction per pass). The alloy samples were warm rolled at strain rates varying from 1.0 x 10-5s-1 to 4.1 x 10-1s-1 to a total true strain of 3, at 4.4 – 7.5% reduction per pass for 3 hours reheating time between passes. Tensile test and microstructural analysis were carried out on the samples. The results showed that at lowest strain rate (4.1 x 10-3s-1), greatest ductility, fracture stress and fracture energy were achieved with 4.0% reduction pass. The material warm rolled to a total true strain of 2.9 exhibited much higher ductility. Longer reheating time revealed coarser grains, with peak ductility occurring at slower strain rates.
Performance Assessment of Biological Wastewater Treatment at WUPA Wastewater Treatment Plant, Abuja, Nigeria
Authors: Chukwu M. N. , Oranu C. N.
Published: August 2019

Biological treatment of wastewater from Wupa Wastewater Treatment Plant, Abuja was investigated. Wastewater samples were collected from the inlet and effluent point (before and after the ultra violet radiation unit) of the treatment plant. The physicochemical parameters; temperature, pH, conductivity, total dissolved solids (TDS), total suspended solids (TSS) and dissolved oxygen (DO) were measured. The Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) were obtained from samples collected from the influent and effluent points using Standard methods specified by the American Public Health Association (APHA). The water samples were also analysed for the presence of bacterial organisms via Total Coliform Count (TCC), Total Bacteriological Count (TBC) and Faecal Count (FC). At the end of the analysis, the percentage removal efficiency of the ultra violet radiation for TCC, TBC and FC were calculated. Results showed that the mean removal efficiency for TCC, TBC and FC were 99.6% , 89.9% and 98.9% respectively; all within the permissible limit of World Health Organization and Federal Ministry of Environment. There was a reduction of 81.5% in COD, 98.9% in BOD which met the required effluent standards. There was significant differences between the pH, TSS, DO, COD and BOD of the influent and effluent (P<0.05). These results showed that there is an urgent need for appropriate steps to be taken for proper management and sanitation of the wastewater before discharging it to the stream, to ensure total conformity with the approved standards.
Soil Chemical Characteristics in Wet and Dry Season at Iva Long Wall Underground Mined Site, Nigeria
Authors: Ogbonna P. C. , Nzegbule E. C. , Okorie P. E.
Published: August 2019

In a bid to diversify the sources of revenue generation in Nigeria, the Government of the Federation has initiated plans to resuscitate coal mining. This study, therefore, assessed the impact of previous mining activities on soil chemical characteristic of the abandoned site. A single factor experiment was conducted in a randomized complete block design (RCBD) with three replications to obtain information on soil status of Iva mined site. Soil samples were collected randomly from ten different sampling points at 0-10, 10-20, and 20-30 cm soil depth in four cardinal points at north (N), south (S), east (E), west (W), and at the centre (c) of crest, middle slope, and valley of Iva mined site. The samples were analysed for heavy metals, macronutrient, soil pH, and organic matter content. The organic matter values ranged from 0.00 ± 0.00 to 1.14 ± 0.02% in dry season and 0.00 ± 0.00 to 1.04 ± 0.06% in wet season, with higher levels of organic matter in the valley (OM ≤ 1.14 %). Soil pH values ranged from 3.98 to 6.00 in wet season and 3.82 to 5.34 in dry season, with higher levels of acidity in the middle slope (pH ≤ 4.37). The range of values of soil macronutrients (K, Mg, N and P) were higher in wet season than in dry season with higher levels of K, Mg, N and P, at middle slope. Similarly, the values of the concentration of heavy metals (Ni and Pb) in soil were higher in wet season than in dry season with higher levels of Ni and Pb at middle slope. The levels of Ni, Pb and Cd in this study are above their allowable limits in Austria, Germany, France, Netherlands, Sweden, and United Kingdom. The high concentrations of Cd and Ni in soils could be taken up in plants via the roots, thus, exposing both man and herbivores to serious health risks.
Tenants Willingness to Pay for Green Features in Office Properties
Authors: Oyewolo M. O. , Komolafe M. O.
Published: August 2019

The study investigates tenants’ willingness to pay for green features in office properties in Lagos, Nigeria. This is with a view to determining the inclinations of users to green buildings. Data for the study were collected through the use of structured questionnaire administered using purposive sampling. Tenants’ Willingness To Pay Index (TWTPI) was used to measure the tenants’ willingness to pay for green building features. The features considered were ‘Water, Rain Water and Sewage’, Site Selection, Site Design and Land Scape Ecology’, ‘Building Ecology, ‘Waste and Recycling’, ‘Indoor Air Climate’, Material use and Conservation’, and Owner and Occupant Education’. The willingness of tenants to pay for features such as ‘Energy Conservation’, ‘Water, Rain Water and Sewage’ and ‘Site Selection, Site Design and Land Scape Ecology’ ranked first, second and third with TWTPI of 3.12, 2.72 and 2.71respectively. This finding shows that the majority of the features had a TWTPI of less than 3(out of 6) indicating that the level of willingness of tenants to pay for the majority of green features was below average. The paper advocates for relevant agencies to embark on aggressive awareness campaign which emphasizes the direct benefits of green building.
Rainwater Harvesting System for Water Supply in a Rural Community in Edo State, Nigeria
Authors: Okovido J. O. , Owen-Egharevba U. , Akhigbe L. O.
Published: August 2019

Water scarcity is still a major problem in many rural communities in Nigeria. In this study, a rain water harvesting system was designed for Ogbekpen, a rural community in Edo state, Nigeria. A conceptual model for rainwater harvesting was developed using the storm water management model (SWMM), Arcmap 10.1 software and daily rainfall data (2000-2016) obtained from the Nigerian Meteorological Agency (NIMET). Runoff, rainfall intensity and change in elevation of three designated catchment zones were taken into consideration. The results revealed that the total amount of rainwater that could be harvested annually (water supply) was 14,314,351.70 L (14,314 m3) from an overall effective rooftop area of 6025.9 m2. This was three times the annual water demand (4,317,965.60 L (4318 m3)), thus demonstrating the capability of the system to meet annual water demand. The required tank capacities for zones 1, 2 and 3 were 870,412.76 L (870 m3), 955,319.4 5L (955 m3) and 788,629.88 L (789 m3) respectively. Comparative physicochemical and microbial analysis of water from rooftops in the three zones and an existing storage well showed that the latter did not comply with drinking water quality guidelines, thus highlighting the importance of a proper conveyance and storage system to improve water quality and availability in the area.
Farmers’ Participation in Agroforestry System in Northwestern Nigeria
Authors: Danjuma M. N. , Mohammed S. , Karkarna M. Z.
Published: August 2019

The aim of this study is to assess agroforestry practices in Northwestern Nigeria with a view to bringing to light some salient features of the system for maximising benefits and improving livelihoods of smallholder farmers in the study area. A total of one hundred and sixty six smallholder farmers were sampled using random technique from five hundred and fifty farmers’ listed by the contact forum in the study area. Questionnaire was administered to the one hundred and sixty six smallholder farmers with a view to examining the level of farmers’ participation in agroforestry in six villages namely Kabobi and Garki in Katsina State, Bulangu and Abonabo in Jigawa State, Bobo in Zamfara State and Gulma in Kebbi State. Interview was also conducted with ten farmers in Bulangu, Kabobi and Gulma to provide explanations on the limitation to acceptance of agroforestry innovations in the study area. Data collected with the questionnaire was analysed using simple percentage and frequency in order to measure dispersion among sampled farmers. Data collected from the interview was coded, transcribed and presented in textual form in the paper. Result of the study revealed that seven agroforestry systems (alley cropping, boarder line planting, scattered planting, woodlot, apiculture, orchard and home garden) were practiced in the area. Orchard and home garden were not practiced in Kabobi, the northern most of the villages. It also indicated farmers’ level of participation for the seven identified technologies as follows: Alley cropping (25.63%), boarder line planting (16.25%), scattered trees on farmland (36.25%), woodlot (1.25%), orchard (1.88%), apiculture (8.75%) and home gardens (10.00%). The key factors limiting acceptance of innovations include: l) lack of tree seedling (25.00%), land tenure issues (17.50%), long tree gestation period of indigenous species (50.63%) and insect attack (06.88%). This study recommended that farmers should be educated more on agroforestry technologies through mass media programmes and ICT.
Hydro-geomorphic study on selected soil properties, classification and management considerations of soils
on alluvial landforms in southeastern Nigeria
Authors: O. Umeugochukwu , F. Akamigbo , V. Chude , P. Eze
Published: August 2019

The soils were characterized with regards to their macro morphology, physicochemical properties and heavy metal contents. This is to infer their pedogenesis and propose agrotechnology transfers as well as management considerations necessary for sustainable cultivation. A reconnaissance survey was used for initial soil identification. Two categories of the flood plain soils were identified viz. the levee and the back-swamp. Three profile pits were dug on each identified category. The results showed that the soils on the back-swamps were poorly drained and the soils on the levee were well-drained. Their colours varied from dull yellow (2.5 YR 6/5) to light grey (7.5YR 8/2) on the levee and dull reddish-brown (5YR 6/3) to pale reddish-orange (7.5YR 8/3) on the back-swamp. Mottling was observed in all the pits, indicating redoximorphism. Clay content was low to high and ranged from 4 to 30 %. It showed illuviation in the back-swamp. The soil pH was slightly acid. It has low exchangeable acidity of 0.2 to 5.83 cmol/kg and low cation exchange capacity ranging from 1.82 to 7.61cmol/kg. The low CEC values imply that the clay mineral dominant in the soils is non-expansible. The soils were not sodic as the mean values for the exchangeable sodium percentage was <6 %. Prevailing pedogenic processes identified in the area, were eluviation, illuviation, gleization, pedoturbation, beautification, and leaching. The soils were classified as Entisols, suborder Psamment and inceptisols, suborder Ustepts and correlated in FAO/WRB as Fluvisols (Dystric fluvisols) and Gleysols. Management practices like drainage practices, use of organic manure to enhance the soil conditions were recommended.
The Intrinsic Scatter of the Radial Acceleration Relation*
Authors: Stone Connor , Courteau Stéphane
Published: August 2019

We present a detailed Monte Carlo model of observational errors in observed galaxy scaling relations to recover the intrinsic (cosmic) scatter driven by galaxy formation and evolution processes. We apply our method to the stellar radial acceleration relation (RAR), which compares the local observed radial acceleration to the local Newtonian radial acceleration computed from the stellar mass distribution. The stellar and baryonic RAR are known to exhibit similar scatter. Lelli+2017 (L17) studied the baryonic RAR using a sample of 153 spiral galaxies and inferred a negligible intrinsic scatter. If true, a small scatter might challenge the ΛCDM galaxy formation paradigm, possibly favoring a modified Newtonian dynamics interpretation. The intrinsic scatter of the baryonic RAR is predicted by modern ΛCDM simulations to be ∼0.06–0.08 dex, contrasting with the null value reported by L17. We have assembled a catalog of structural properties with over 2500 spiral galaxies from six deep imaging and spectroscopic surveys (called the “Photometry and Rotation curve OBservations from Extragalactic Surveys”) to quantify the intrinsic scatter of the stellar RAR and other scaling relations. The stellar RAR for our full sample has a median observed scatter of 0.17 dex. We use our Monte Carlo method, which accounts for all major sources of measurement uncertainty, to infer a contribution of 0.12 dex from the observational errors. The intrinsic scatter of the stellar RAR is thus estimated to be 0.11 ± 0.02 dex, in agreement with, though slightly greater than, current ΛCDM predictions.
GR-MHD Disk Winds and Jets from Black Holes and Resistive Accretion Disks
Authors: Vourellis Christos , Fendt Christian , Qian Qian , Noble Scott C.
Published: August 2019

We perform GR-MHD simulations of outflow launching from thin accretion disks. As in the nonrelativistic case, resistivity is essential for the mass loading of the disk wind. We implemented resistivity in the ideal GR-MHD code HARM3D, extending previous works for larger physical grids, higher spatial resolution, and longer simulation time. We consider an initially thin, resistive disk orbiting the black hole, threaded by a large-scale magnetic flux. As the system evolves, outflows are launched from the black hole magnetosphere and the disk surface. We mainly focus on disk outflows, investigating their MHD structure and energy output in comparison with the Poynting-dominated black hole jet. The disk wind encloses two components—a fast component dominated by the toroidal magnetic field and a slower component dominated by the poloidal field. The disk wind transitions from sub- to super-Alfvénic speed, reaching velocities ≃0.1c. We provide parameter studies varying spin parameter and resistivity level and measure the respective mass and energy fluxes. A higher spin strengthens the B

ϕ
-dominated disk wind along the inner jet. We disentangle a critical resistivity level that leads to a maximum matter and energy output for both, resulting from the interplay between reconnection and diffusion, which in combination govern the magnetic flux and the mass loading. For counterrotating black holes the outflow structure shows a magnetic field reversal. We estimate the opacity of the innermost accretion stream and the outflow structure around it. This stream may be critically opaque for a lensed signal, while the axial jet funnel remains optically thin.
Aplastic Anemia induced by Nivolumab before a Treatment of Allogeneic Hematopoietic Stem Cell Transplantation for Acute Myeloid Leukemia
Authors: Cheng Wenhan , Jackson Bryan
Published: August 2019

As an Immune checkpoint blockade therapy (ICB), nivolumab has demonstrated efficacy in Acute Myeloid Leukemia (AML) and various other malignancies. Nivolumab is used as an anti-programmed cell death 1 (PD-1) agent. The toxicities are observed in more than 10% of patients, because of its ability, anti-PD-1 will upregulate the activity of T-cells. Over-activated T-cells will cause immune-related adverse events such as Aplastic Anemia (AA). Here, we present a case of an over 60-years old male patient with AML, and the possibility for him to receive an allogeneic hematopoietic stem cell transplantation (allo-HSCT). The patient was treated with nivolumab and subsequently developed AA. As an additional consideration, we will also discuss whether allo-HSCT is transplantable when AA is performed during the treatment of AML.
Complementary and Alternative Medicine: Core Competencies for Family Nurse Practitioners
Authors: Burman Mary E
Published: August 2019

ABSTRACT

Recent surveys demonstrate substantial use of complementary and alternative medicine. This growth presents a challenge for family nurse practitioner programs that already have dense curricula due to the explosion of biomedical knowledge. Significant barriers exist to incorporating complementary and alternative medicine into educational programs, such as differing philosophies about health and lack of research on many complementary and alternative medicine therapies. This study used a mailed questionnaire in which family nurse practitioner program directors described the current status of complementary and alternative medicine teaching in family nurse practitioner programs and identified core competencies for family nurse practitioners. Most programs reported integrating some content on complementary and alternative medicine into advanced practice courses, such as health promotion. Competencies related to interviewing, critical thinking, evidence-based medicine, knowledge of laws, ethics, and spiritual and cultural beliefs were rated the highest. The findings are useful in helping family nurse practitioner faculty incorporate complementary and alternative medicine content into their curricula with the goal of preparing family nurse practitioners for safe practice.
Distinct Tissue-Specific Roles for the Disease-Associated Autophagy Genes ATG16L2 and ATG16L1
Authors: Khor Bernard , Conway Kara L. , Omar Abdifatah S. , Biton Moshe , Haber Adam L. , Rogel Noga , Baxt Leigh A. , Begun Jakob , Kuballa Petric , Gagnon John D. , Lassen Kara G. , Regev Aviv , Xavier Ramnik J.
Published: August 2019

The clear role of autophagy in human inflammatory diseases such as Crohn disease was first identified by genome-wide association studies and subsequently dissected in multiple mechanistic studies. ATG16L1 has been particularly well studied in knockout and hypomorph settings as well as models recapitulating the Crohn disease–associated T300A polymorphism. Interestingly, ATG16L1 has a single homolog, ATG16L2, which is independently implicated in diseases, including Crohn disease and systemic lupus erythematosus. However, the contribution of ATG16L2 to canonical autophagy pathways and other cellular functions is poorly understood. To better understand its role, we generated and analyzed the first, to our knowledge, ATG16L2 knockout mouse. Our results show that ATG16L1 and ATG16L2 contribute very distinctly to autophagy and cellular ontogeny in myeloid, lymphoid, and epithelial lineages. Dysregulation of any of these lineages could contribute to complex diseases like Crohn disease and systemic lupus erythematosus, highlighting the value of examining cell-specific effects. We also identify a novel genetic interaction between ATG16L2 and epithelial ATG16L1. These findings are discussed in the context of how these genes may contribute distinctly to human disease.