bluuebunny/crossref_metadata_2025 huggingface dataset:
A ADMISSIBILIDADE DOS MEIOS DE PROVA ILÍCITOS NO PROCESSO CIVIL: UMA ANÁLISE A PARTIR DA CONFORMAÇÃO CONTEMPORÂNEA DOS PODERES INSTRUTÓRIOS DO JUIZ E DA TÉCNICA DE PONDERAÇÃO DO ART. 489, §1º DO CPC/2015
Authors: Cabral Trícia Navarro Xavier , Carvalho Frederico Ivens Miná Arruda de
Published: September 2020

O artigo tem por finalidade a análise da questão referente à admissibilidade dos meios de prova ilícitos no processo civil a partir do paradigma do Código de 2015, buscando identificar em que medida o diploma normativo alterou a dinâmica de tal instituto. Adotou-se o método descritivo-exploratório por meio de revisão bibliográfica sobre o caráter fundamental do direito à prova; as correntes clássicas e contemporâneas sobre o conceito e admissibilidade da prova ilícita e a fundamentação idônea das decisões sobre a matéria, investigando-se ademais a contribuição da técnica de ponderação trazida pelo art.489, § 2º do CPC/2015 para sua concretização.
O CONTROLE DE CONSTITUCIONALIDADE PELOS TRIBUNAIS DE CONTAS: ANÁLISE DAS RECENTES DECISÕES DO TRIBUNAL DE JUSTIÇA DO ESTADO DO RIO GRANDE DO SUL
Authors: Zanotta Calçada Luís Antonio , Rodrigues Reck Janriê
Published: September 2020

Este estudo versa sobre a possibilidade de controle de constitucionalidade pelos Tribunais de Contas. A partir da análise de recentes decisões prolatadas pelo Tribunal de Justiça do Estado do Rio Grande do Sul – TJ/RS, buscou-se verificar se aqueles julgados encontram sintonia com a doutrina e a jurisprudência do Supremo Tribunal Federal a respeito do tema. Apresentadas as funções dos Tribunais de Contas, perpassa-se pelas recentes decisões do TJ/RS sobre o exercício do controle de constitucionalidade pelas Cortes de Contas. Após, foram expostas críticas doutrinárias e jurisprudências a respeito da posição do TJ/RS. A análise foi realizada a partir de revisão bibliográfica e documental, utilizando o método indutivo. Ao final, concluiu-se que a posição do Tribunal de Justiça gaúcho, que defende a impossibilidade da análise da conformidade de leis locais frente à Constituição, é equivocada e apequena as importantes competências atribuídas ao órgão de controle pelo constituinte de 1988.
Molybdenum Dichalcogenide Cathodes for Aluminum-Ion Batteries
Authors: Divya Shalini , Johnston James , Nann T
Published: September 2020

© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Many successful battery electrodes are based on 2D-layered materials. Aluminum-ion batteries are studied using molybdenum dichalcogenides: MoS2, MoSe2, and MoSSe as active cathode materials. The batteries show clear discharge voltage plateaus in the ranges 1.6–1.4 V for MoS2 and MoSe2, and 0.6–0.5 V for MoSSe. MoS2 and MoSe2 have similar crystal structures; interestingly, it is found that MoSe2 performed better than MoS2. MoSSe exhibits a higher specific capacity over MoS2 and MoSe2, but the energy density is lower than MoSe2 at a current rate of 40 mA g−1. MoSe2 cells record a discharge capacity of ≈110 mAh g−1 with an average potential in the range of 2.0–1.8 V and 1.5–0.8 V during discharge. The cells are stable at 100 mA g−1 for over 200 cycles with 90% coulombic efficiency.
Penurunan Skala Nyeri Pada Anak Post Operasi Laparatomi Menggunakan Terapi Musik Mozart
Authors: Rais Ali , Alfiyanti Dera
Published: September 2020

Laparatomi merupakan salah satu penatalaksanaan pembedahan yang dilakukan pada daerah abdomen. Prosedur pembedahan menyebabkan sensasi rasa nyeri pada anak. Studi kasus ini bertujuan untuk menganalisa penerapan terapi musik mozart terhadap penurunan nyeri pada anak post laparotomi. Studi kasus ini menggunakan metode deskriptif. Responden adalah 2 anak post operasi laparatomi hari ke 1 dan dikelola selama 3 hari dengan pemberian tindakan keperawatan berupa terapi musik mozart dengan frekuensi 1 kali/hari selama 15 menit. Pengumpulan data menggunakan rekam medik, wawancara, observasi dan metode asuhan keperawatan. Alat pengumpulan data meliputi handphone, airphone, musik mozart dan alat untuk skala nyeri menggunakan Visual Analogue Scale (VAS). Hasil studi menunjukkan bahwa ada perbedaan skala nyeri sebelum dan sesudah dilakukan terapi musik mozart, baik pada responden pertama mapun responden kedua. Skala nyeri pada kedua responden menurun dari skala sedang menjadi skala ringan. Terapi Musik Mozart dapat menurunkan nyeri pada anak post operasi laparatomi.
The Relationship between Knowledge and Medication Compliance Behavior among Patients with Tuberculosis
Authors: Hidayat Jufri , Lee Mei-Chen , Lee Ming-Der , Chen Chen-Hsiu
Published: September 2020

Tuberculosis (TB) remains the highest priority among infectious diseases in the world today with increasing morbidity and mortality every year. Adherence to treatment plays an important role in the success of therapy among TB patients. This study aims to explore the relationship between demographic characteristics, knowledge, and medication compliance behavior among patients with tuberculosis in Indonesia. This study was descriptive correlational and cross-sectional design with the total sample was 150 tuberculosis confirmed in Medan Pulmonary Hospital, Indonesia. In this study found that there is a significant relationship between ethnicity and medication adherence (continues variable) with p = 0.01. Meanwhile when medication compliance behavior was treated as categorical variables, a significant relationship was found between medication compliance behavior and medical history (p = 0.03), smoking (p = 0.005), and alcohol (p = 0.03) among tuberculosis patients in Indonesia. In the multivariate analysis, multiple linear regression was performed which surprisingly shows that education was significantly associated with knowledge of TB (p = 0,02), and ethnicity (0.04).
Effectiveness of slow deep breathing exercise on decreasing stress levels for patients with diabetes mellitus
Authors: Warsono Warsono , Yanto Arief
Published: September 2020

The prevalence of diabetes mellitus patients increases in Semarang province every year. Whereas, it reached 120 numbers of patients in Kedungmundu public health center by 2020. One of the psychological problems encountered by patients with diabetes is a high risk of stress levels.  The condition of stress, anxiety, and fear influence the production of adrenaline hormones which aggravate the capability of patients to perform daily living activities. Slow deep breathing exercise is a nonpharmacologic method to reduce stress levels on diabetes mellitus patients.  This study aimed to investigate the effect of slow deep breathing exercises on decreasing stress levels for patients with diabetes mellitus. This study used a quasi-experiment pretest-posttest with a control group design was conducted at Kedungmundu public health center, Semarang. All of 32 samples were recruited in this study. Wilcoxon test analysis calculated a value of p=0.000 < ɑ 0,005. The statistical analysis found significantly different results between the pretest and posttest in the experimental group. Slow deep breathing exercise is effective to decrease the stress levels for patients with diabetes mellitus. Slow deep breathing exercise is strongly suggested for patients with diabetes mellitus as self-intervention to reduce stress levels.
Tepid sponge and sponge bath to change body temperature children with dengue fever
Authors: Hastuti Witri , Sari Novi Murdiana , Wulaningsih Indah
Published: September 2020

Dengue Haemorrhagic Fever (DHF) is a viral infection transmitted by mosquitoes causing potentially deadly complications. The typical sign of this case is getting high fever until 3-7 days then it drops quickly. To make a lower body temperature, compress the body with warm water by using tepid sponge and sponge bath techniques. The objective of this study to determine the effect of compresses with tepid sponge and sponge bath techniques on changes in children's body temperature with DHF. This study used quantitative research with quasi-experiment design two group pre-test post-test design approach. The population of 30 children with fever, with purposive sampling technique using the Lemeshow formula. The analysis used was paired T-test, Wilcoxon, and Mann Whitney at a significance level of 0.05. Wilcoxon statistical test results show there is a tepid sponge effect on children body temperature with DHF with a p-value of 0.001. The dependent t-test shows there is an influence of sponge bath in children body temperature with DHF p-value of 0,000. The Mann witney test shows that Sponge bath is more effective than a tepid sponge in reducing fever with a p-value of 0,000. The conclusion of this study can be used as a guide for treating children with fever with the issuance of a standard SPO. Application of this method needs to involve parents to maintain the comfort of children, so it needs to make socialization to parents.
The Relationship Between Nurses’ Job Stress and The Implementation of Patient Safety in The Hospital
Authors: Kustriyani Menik , Mariyati Mariyati
Published: September 2020

Nurses’ job stress is considered as a human resource management’s issue in the hospital. Study literature reviewed 13.6% of ICU nurses encounter the potential threat related to the patient safety occurrences. This study was designed to investigate the correlation between nurses’ job stress and the implementation of patient safety in the hospital in-patient room. This study used a quantitative-analytical method with a cross-sectional approach. A total of 30 respondents were recruited by using proportionate random sampling. A self-reported questionnaire was utilized to collect the data. The normality data was tested by using Kolmogorov Smirnov analysis (p<0.05). Spearman Rank test was applied to analyze the overall data. The study findings revealed there was no significant relationship between nurses’ job stress and the patient safety on the target 1 (implementation of patient identification), target 3 (drug safety improvement), target 4 (definitive location and procedure of surgery patient), target 5 (post-health-services infection risk) and target 6 (risk-falls reduction). However, the analysis was found to be statistically significant between nurses’ job stress and effective-communication enhancement (target 2 of patient safety). The study findings concluded that stress could positively impact to improve nurses’ awareness to maintain the 6 targets of patient safety
Antalya Kırkmerdiven ve Yakın Çevresinin Teras Bahçeye Dönüştürülmesi Tasarım Önerisi
Authors: ŞEKERCİ Yaren , KAYNAKCI ELİNÇ Zuhal , AÇIKEL Mikail
Published: September 2020

Antalya’da Kaleiçi’nden yat limanına erişimin önemli akslarından birinde bulunan Kırkmerdiven, hem bölgede yaşayanlar hem de yerli ve yabancı turistler tarafından sıklıkla kullanılmaktadır. 11. yüzyılda Venedikliler tarafından şehir merkezi ve yat limanı arasındaki ulaşımı sağlamak amacıyla yapılan ve aslında isminin aksine kırk dört basamağı bulunan bu taş merdiven, Antalya’nın önemli bir kültürel mirasıdır. Ancak basamaklarının kayganlaşması ve yeterli güvenlik önlemini sağlayacak şekilde bakım ve onarımdan geçirilmemesi nedeniyle birçok kişinin ciddi bir şekilde yaralanmasına neden olmaktadır. Bu nedenle Antalya Büyükşehir Belediyesi Kırkmerdiven’in iyileştirilmesiyle ilgili öneri projeler geliştirmektedir. Merdivenin alt kısmındaki nişler de atıl durumdadır. Bu çalışmada, bu tarihi ve turistik alanı daha cazibeli bir hale dönüştürmek amacıyla Kırkmerdiven’in altındaki nişlerin ve önündeki terasın, teras bahçeye dönüştürülmesi önerilmektedir.
OKUL YÖNETİCİLERİNİN POLİTİK BECERİ DÜZEYLERİNİN BAZI DEĞİŞKENLERE GÖRE İNCELENMESİ
Authors: KAPLAN Venhar , CEMALOĞLU Necati
Published: September 2020

Bu araştırmanın amacı okul yöneticilerinin politik becerilerinin bazı değişkenler açısından incelenmesidir. Bu araştırmada betimleyici araştırma desenlerinden ilişkisel tarama yöntemi benimsenmiştir. Bu araştırmanın katılımcıları tabakalı örneklem yöntemi ile belirlenen, Kayseri ilinde farklı ilçelerde ortaokul ve liselerde görev yapan 235 okul yöneticisinden oluşmaktadır. Araştırmada veri toplama aracı olarak Politik Beceri Envanteri (PBE) kullanılmıştır. PBE’nin “sosyal zekâ”, “kişilerarası etki”, “ilişki ağı kurma” ve “samimi görünme” olmak üzere dört alt boyutu bulunmaktadır. Elde edilen verilerin analizi sonucunda, okul müdürlerinin politik beceri düzeyleri yüksek düzeyde tespit edilmiştir. Bu doğrultuda, en yüksek puan samimi görünme alt boyutunda gerçekleşirken, en düşük puan ise sosyal zeka alt boyutunda hesaplanmıştır. Ayrıca araştırmada 50 yaş ve üzeri okul yöneticilerinin 20-35 yaş aralığındaki okul yöneticilerine göre samimi görünme boyutunda daha yüksek puanlar elde ettikleri tespit edilmiştir. Analizler sonucu elde edilen diğer bir sonuç ise okul müdürleri ilişki ağı kurma ve samimi görünme boyutlarında müdür yardımcılarından daha yüksek skor elde etmişlerdir. 20 yıl ve üzeri mesleki kıdemi olan okul yöneticilerinin sosyal zeka puanları diğer gruplardan daha yüksek düzeyde hesaplanmıştır. Bu araştırmanın bulgularından hareketle, okul yöneticilerinin yöneticilik düzeylerinin arttıkça ve tecrübe düzeylerinin yükseldikçe, çevreyi tanıma, uygun tepkiler geliştirme, uyum sağlama, sosyal rolleri daha kolay benimsemeleri olasılıklarının da yüksek olacağı ileri sürülebilir. Ayrıca yöneticilerin yönetici kıdem süresinin yükselmesi, onların diğer kişileri daha kolay anlayabilme, etkili ilişki kurabilme, daha dışadönük ve sosyal olabilme özelliklerinin geliştiğinin bir göstergesi olarak değerlendirilebilir. Araştırma çeşitli önerilerle sonlanmaktadır.
FREE DISPOSAL HULL (FDH), ODER-M AND ODER-ALPHA (α) EFFICIENCY ANALYSIS FOR RUBBER SMALLHOLDERS IN MALAYSIA
Authors: Aliyu A.
Published: September 2020

The study examines the technical efficiency of rubber smallholders in Negeri Sembilan under 3 age categories using different method of efficiency analysis which include the Free Disposal Hull (FDH), Expected Oder-m (EOM) and Oder-Alpha (α) (O-α). The analysis was done in such a way that the rubber age was categorized in to All-age, matured-age and Old-age categories. Multistage sampling procedure was used and 307 smallholders were used comprising 307,206 and 101 for all-age, matured-age and old-age categories respectively. The result of the analysis revealed that the mean technical efficiency of all-age, matured-age and old-age crops under FDH were 1.00, 1.00 and 1.00 while that of Order-Alpha and Expected Oder-m were 0.89, 0.89, 0.90 and  0.96, 0.97 0.98 respectively for the all-age, matured-age and old-age crops categories. The percentages of rubber crop farms that are on the FDH production frontier were 100%, 100%, and 100% while under Order Alpha (α) were 13%,10 and 20%. The ones under expected order-m frontier were 29%, 39% and 52% respectively for all-age, matured-age and old-age categories. The mean TE of FDH and mean TE of Order-Alpha were subjected under paired t-test and found to be statistically different from each other. It was revealed that mean TE of FDH was statistically greater than that of Order-M efficiency. Order- M and Order-alpha efficiencies were also subjected under paired mean t-test, and the results indicated that the two means were statistically different from each other. Expected Order-M was found to be statistically higher in magnitude than its counterpart Order Alpha. The study finally concludes that FDH has higher efficiency scores than the other two partial production frontiers. Also deduced from the study was that the old-age category has higher efficiency scores than both the matured-age and all-age categories under both the EOM and Oder Alpha production frontier techniques.. So conclusively the old-age is higher than the matured-age which in turn higher than the all-age category in both the Expected Oder-m and Oder-Alpha production frontiers. Most importantly, policy planners should be very cautious on specific techniques. They should as well be knowledgeable and comparatively minded on the results obtained from both the Expected Oder-m and Oder-Alpha production frontiers with regards to the policy selections on the rubber crop.
ASSOCIATION BETWEEN DEMOGRAPHIC FACTORS AND ATTITUDE TOWARDS CREDIT CARD USAGE, AMONG THE HOUSEHOLDS IN KARAVEDDY DIVISIONAL SECRETARIAT IN JAFFNA DISTRICT - SRI LANKA
Authors: Athiyaman T. , Subramaniam V.A.
Published: September 2020

Technological developments play a significant role in accelerating economic development of nations. One of the important evidence for the above statement is the payment system using the card. This payment instrument is called as credit card. The credit card, also referred to as "plastic money" represents a contemporary payment system in the modern world. It can be stated as a payment tool that provides to the people the possibility of purchasing needed goods or services, without making any payment at that moment of purchase, by allowing them to make such payment at a later time, without charging any additional financial burden.
DİYANET İŞLERİ BAŞKANLIĞI CAMİ YAPIMI VE BAKIMI FONU BÜTÇE VE MUHASEBE DÜZENİ
Authors: KAÇAR Yusuf
Published: September 2020

Türkiye’de camilerin inşaası ve mülkiyeti farklı dernek, vakıf ve kişilere ait bulunmaktadır. Yönetimi, tamir ve bakımı Diyanet İşleri Başkanlığı tarafından yapılmaktadır. Özellikle camilerin yapılacağı yer, mimarisi ve sağlamlığı gibi merkezi bir planlama ve organizasyon gerektiren işlerin bunları yöneten kurumca yerine getirilmesi daha uygun olacaktır. Camiler çoğunlukla gönüllü bağışları ile yapılmakta ancak bağışçının istediği yerde ve istediği biçimde yapılmaktadır. Bu da beraberinde estetik, güvenlik ve ihtiyacı karşılama gibi özelliklerin ihmal edilmesine neden olmaktadır. Camilerin tamir ve bakımı Diyanet İşleri Başkanlığınca yönetilecek bir fon tarafından üstlenilmesi bütün bu olumsuzlukları ortadan kaldırabilir. Diyanet İşleri Başkanlığı Cami Yapımı ve Bakımı Fonu kurularak camiler; güzel ve kalıcı eserlere dönüşebilir. Fon bir kamu kurumuna ait olduğu için benzer nitelikteki fonların esas alınması gerekecektir. Benzer fonları inceleyen makale ve ilgili mevzuat incelenmiş olup buna uygun bir çalışma yapılmıştır. Fonun yapısı ve işleyişi başka çalışmalara konu olabilecek niteliktedir. Bütçe ve muhasebe düzeni ayrıntılı olmadan genel hatları ile ele alınacak; belge düzeni ve ayrıntılı hesap planı dışarıda bırakılacaktır. İlk bölümde ülkemizdeki camilerin durumu, yapımı ve yönetimi ile ilgili bilgilere yer verilecek, fon kurulmasının nedenleri ve sonuçları belirtilecektir. Daha sonra fonun gelirleri ve giderleri ile bütçesi ele alınacaktır. Son bölümde hesap çerçevesi ve muhasebe düzeni incelenecektir.
EFFECT OF USING RECYCLED CONCRETE AGGREGATE ON BEHAVIOR OF R.C CORBELS CAST WITH SELF-COMPACTING CONCRETE (EXPERIMENTAL AND ANALYTICAL STUDY)
Authors: Emadaldeen A. Sulaiman Emadaldeen A. Sulaiman , Khudair Jamal
Published: September 2020

Due to repeated wars against Iraq as well as the terrorist operations lead to demolition of many government and commercial buildings and thus necessitating the demolition of these buildings and throwing them as a rubble. Also any concrete structure reaches its end life, it is either repaired or demolished and transformed to waste. The waste materials were transferred to landfill and no longer used. These waste will increase with time and cause an environmental problem. So, this study was prepared to examine the ability of crushing and reusing of the demolition waste as a coarse aggregate in the production of new concrete known as a Recycled Aggregate Concrete. This study consists of two parts: experimental and theoretical parts. Both parts dealt with the effect of using recycled concrete aggregate (RCA) as a partial replacement of natural coarse aggregate in self-compacting concrete, on the structural behavior of reinforced concrete corbels. The replacement percentages were used in this study (0%, 25%, 50%, and 75%). The experimental part consists of casting and testing of ten self-compacting reinforced concrete corbels which made with either natural coarse aggregate or with a partial replacement of natural coarse aggregate by recycled concrete aggregate then the experimental results was compared with the analytical results (finite element results). The analytical part was carried out by using ANSYS program (version 18). In ANSYS program three types of elements were used in the modeling of each corbel specimen. The elements are Solid65, Link180 and Solid185. Solid 65 element was used to represent of concrete while link180 element was used to represent of steel reinforcement and finally solid185 element was used to represent the steel plates at supports and under the applied load. The ANSYS software is used to simulate the load bearing capacities of the reinforced concrete corbel and then compared with the experimental results. The results show that there is a good coincidence between the experimental and analytical results. Therefor the ANSYS software can be used to predict the shear strength of SCC corbels containing RCA with acceptable accuracy.
CONNECTION BEHAVIOR IN COMPOSITE PROFILED STEEL SHEET WITH FERROCEMENT (PSSF) SYSTEM
Authors: Jasim Nabeel , Jennam Mohammed
Published: September 2020

This paper concerns with the behavior of the connections in the composite Profiled Steel Sheet with Ferrocement (PSSF) systems. The PSSF panels is a light weight composite panel consists of a profiled steel sheet (PSS) and ferrocement panel connected together by either mechanical fasteners or by epoxy adhesive resin. Ten push-out specimens were tested. The veriables were the strength of morter and the volume friaction of wire mesh for ferrocement panels, and types of connection between the two components. The ultimate load, the load slip relationship, and modes of failure were recorded. The results showed that the specimens connected by using* bolts of 10 mm diameter can sustain load greater by 64% than those connected by using bolts of 5 mm diameter. The ultimate load was found not to be inflenced** when the strength of ferrocement is increased from 35 MPa to 45 MPa. Also the effect of volume fraction of wire mesh was observed to enhance slightly the ultimate load when the layers of wire meshs is increased from 2 to 3 layers. For the specimens made by connecting the ferrocement components to the PSS by adhesive epoxy layer, a rigid connection was obtained and sudden separation occurred between the ferrocement component and steel sheet after local buckling of PSS.
TWIN FETUS ECG SIGNAL EXTRACTION BASED ON TEMPORAL PREDICTABILITY
Authors: Talib Mushtaq , Abdullah Ali , Abdullah Ahmed , Hamzah Bahaa
Published: September 2020

The most popular defects that infect new born babies have close connection with heart. Approximately 1% percent of new born babies suffering from defects that are caused by heart. By observing Electrocardiogram "ECG" during gestation doctors can study the fetal heart activity that collected from mother abdominal and rectify number of defects which has been diagnosed in fetal heart. Many techniques like filters, BSS and even artificial intelligence used to extract and process fetal ECG signal. In case of twins gestation the problem would be more complicated because the recorded signal is a mixture of multi signals which are mother ECG, fetuses ECG and noises where every signal comes from different source in addition fetus have the same ECG signal features as well. In this study the concentration would be on BSS techniques specifically on Stone BSS method. A comparison has been made between Stone method and two other methods "EFICA and JADE". The results proved that Stone method has better performance comparing to the other BSS techniques
THE EFFECT OF CURVATURE RATIO ON THE EVAPORATIVE COOLING OF AIR FLOW THROUGH BENT DUCT
Authors: Mohammed Abdul Satar , Abed-Alfathel Sadiq
Published: September 2020

This study investigates the effect of curvature ratio on the liquid-gas mixing in an air humidification process by choosing the optimum positioning of nozzles matrix fixed prior to a bent duct. The present study is considered as a simulation of the gas turbine compressor inlet air cooling by the fogging technique. The experiments were conducted using a wind tunnel with an average air velocity of (5 m/s) through a 50 cm square cross sectional duct. The study employs three curvature ratios of 0.25, 0.5 and 0.75. Also three nozzles tilt angles were tested at – 45°, 0° and 45° with respect to the axial air flow direction. The design and the configuration of the nozzles matrix is decided according to the flow structure extracted from numerical simulation using CFD analysis with RNG-k-ε turbulent model. The results indicate that a curvature ratio of 0.75 gives the best performance of the humidification system when the nozzles matrix installed as far as possible prior to the bent duct giving enough residence time for the injected droplets to evaporate. At nozzles tilt angle of 0°, the relative humidity increased about 53.63% and the corresponding reduction in air temperature was 17%. Therefore, the optimum position of the nozzles has been shown in this study is at 1.5 m prior to the curve and a tilt angle of 0° when using the largest curvature ratio of 0.75 due to the shrink in the separation zone accompany the weakening of centrifugal forces. This effect would widen the mixing area for the two streams to react and producing better cooling and humidification of the air.
EFFECTS OF CRAB SHELL AND CHARCOAL REINFORCEMENTS ON THE MECHANICAL PROPERTIES OF POLYESTER MATRIX COMPOSITES
Authors: Bolasodun Babatunde , Durowaye Stephen , Rufai Islamiyat , Lawal Ganiyu
Published: September 2020

Composites are produced when two or more materials are used to give combination of properties that cannot be attained otherwise. This study aims to use crab shell and charcoal reinforcements to enhance the mechanical properties of polyester composites and decrease the environmental pollution caused by the agro waste. In this study, 5 – 25 wt. % of 100 g of grounded charcoal and crab shell with an average particles size of 150 µm were used for polyester matrix composites. Flexural strength, impact resistance, hardness and elastic modulus tests were carried out on the developed samples. The microstructure of the samples revealed a uniform distribution of the reinforcements within the polymer matrix with different morphology of the biocomposites. The results showed that the greatest flexural strength value of 361.37 MPa was obtained at 25 wt. % and the highest Brinell hardness number (BHN) was 118.27 at 20 wt. %. However, the highest modulus of elasticity was 335.63 MPa at 15 wt. % reinforcement with crab shell reinforced and was 308.64 MPa with charcoal reinforcements at 20 wt. %. Furthermore, the highest impact energy was 5.49 J for crab shell and 5.31 J for charcoal reinforced polyester composite. The development of the biocomposites of these materials will decrease the environmental pollution and improve the properties of the polyester matrix composites for engineering applications.
INVESTIGATING MINERALOGICAL AND PHYSIO-CHEMICAL PROPERTIES OF BENTONITE FOR WATER-BASED FLUIDS
Authors: Bakhshi Masoomeh , Mozdianfard Mohammad-Reza , Hayati-Ashtiani Majid
Published: September 2020

Bentonite is a well-known type of clay and the mineralogical and physio-chemical characterization of its suspensions is essential to be investigated. In this study, the mineralogical and Physio-chemical characterization of the nano-porous structure of four industrial-grade bentonite samples namely, B1, B2, B3 and B4 were investigated to determine their mineralogical properties for a specific industrial application. Instrumental analyses of samples using XRD, XRF and BET were investigated along with laboratory tests including swelling and sediment indices, surface area and cation exchange capacity as well in order to select the appropriate sample. XRF along with slurry pH shows alkali metal ions. The results indicate B4 has calcite impurity, 50 cP viscosity reading at 600 r/min, 6 value for yield point/plastic viscosity ratio and 39.05 wt% residue of diameter greater than 75 μm. B3 is the most suitable sample for water-based fluid utilization compared to B1, B2 and B4, which satisfies the best standard requirements.
UTILIZATION OF EGGSHELL AND ACTIVATED CARBON AS ADSORBENTS FOR REMOVAL SALICYLIC ACID FROM AQUEOUS SOLUTION
Authors: Hassan Zainab , Abdul Jabbar Marwa
Published: September 2020

The world. The present study attempts to use waste material (eggshell) as adsorbent for salicylic acid removal and compare its activity with activated carbon.
Many variables were studied to indicate their influence on removal efficiency. They have been included pH of solution were (2-11), salicylic acid concentration (10-50ppm) and adsorbent concentration (10g/l – 25 g/l) for eggshell while for activated carbon (1g/l -5g/l).
From the experimental results, there were noticed that the percentage removal increased with increasing adsorbent concentration, acidic solution while decreased with increasing salicylic acid concentration. Also, the results indicated that eggshell gave lower removal compared with activated carbon. Therefore the best conditions are pH solution was 2, salicylic acid concentration 10ppm, activated carbon amount 5g/l while for eggshell 25g/l that achieved percent removal reached 97 % and 24% for activated carbon and eggshell respectively.
PERFORMANCE OF SKIRTED CIRCULAR SHALLOW FOOTINGS RESTING ON SANDY SOIL UNDER INCLINED LOADS
Authors: Abdulhasan Osamah , Mustafa Faris , Al-Zuhairi Alaa
Published: September 2020

Experimental tests were conducted to study the behavior of skirted foundations rested on dry medium sandy soil subjected to vertical and inclined loads. To achieve this goal, a small-scale physical model was designed and performed which contained an aluminum circular footing (100 mm) in diameter and (10 mm) in thickness and skirts with different heights, local medium poorly graded dry sand is placed in a steel soil container (2 mm) thick with internal dimensions (1000 mm x 1000 mm in cross section and 800 mm in height). The main objective of this study was to evaluate the response of skirt attached to the foundation at different skirt (L/D) ratios (0.0, 0.5, 1.0 and 1.5) and is subjected to point load at different angles of inclination (θ) (90 °, 80 °, 70 ° to 60 °) varying with the horizontal. In all tests, the relative density of sand was kept constant and equal to (60%). Four tests were conducted on a foundation without a skirt, for comparison reasons, and twelve tests were conducted on a skirt attached to foundation. The results showed that with decreasing the angle of inclination of load with the horizontal the load carrying capacity decreased due to increase the horizontal component of applied load which leads to increase the shear stresses under the foundation, however that effect decreases with increase the skirt height.
SAFETY CONFORMITY PREDICTION FOR A BOTTLING PROCESS PLANT: A MULTIPLE REGRESSION APPROACH
Authors: Martins Shedrach , Sunday Ayoola Oke Sunday Ayoola Oke
Published: September 2020

Safety conformity is an industrial practice to obtain enhanced safety performance and improved worker-management-government relationships. In this paper, a novel method to model and predict the conformity of bottling process operations and activities to safety rules and accident prevention is presented. Inspired by the machine guarding literature in safety compliance, this research extends the regression model beyond the machine operations domain, to cover activities in beverage testing unit (BTU), shuttle vehicle flotilla (SVF), stockroom, and suppliers. Data from practice in a bottling plant in Nigeria demonstrates the model's effectiveness. The coefficients of determination (R2 = 0.8454, 0.3891, 0.8156, 1 and 0.8156), showed the predictive competence of the warehousing, manufacturing hallway (MH), BTU, SVF, and suppliers' variables, respectively. These R2 values were derived from computations and tabulated by the software program used, and BTU and suppliers' values for R2 were obtained as the same from the program software. The relative importance of the bottling segmental factors was evaluated through ANOVA. The bottling process data results revealed the most significant variables at (p<0.05; calculated probability). This insight offers safety managers with useful practice information to plan and control.
THERMAL AND TRIBOLOGICAL CHARACTERISATION OF ASBESTOS-FREE PARTICULATE CERAMIC MATRIX COMPOSITES
Authors: Durowaye Stephen , Sekunowo Olatunde , Lawal Ganiyu
Published: September 2020

Production of friction particulate ceramic matrix composites (PCMCs) by powder metallurgy method was carried out using iron 105 μm millscale, 50 μm silica sand, 80 μm magnesia and 53 μm bentonite clay as input materials. Different formulation of the blend of these materials were prepared and the composites were produced. Microstructural, frictional, thermal and wear characterisation were determined using standardised methods. The ceramic composites exhibited very good properties in terms of thermal stability (heat resistance), coefficient of friction (COF) and resistance to wear. The specific values of these properties exhibited by sample D having 12 wt. % iron millscale addition in terms of high resistance to thermal decomposition in the temperature region (0 – 1600 0 C) indicating thermal stability, appreciable high COF (0.59) and very low wear rate of 1.9093 x 10-6 g/m are desirable. The uniform dispersion of the particles as observed in the microstructure and strong bonding/adhesion contributed to the enhancement of the properties. These results are indication that the composite is very suitable for application in areas where high resistance to thermal stress and abrasive wear are required such as the brake assembly of automobiles, specifically the brake pads.
STRUCTURAL, MECHANICAL AND THERMAL PROPERTIES OF LOW DENSITY POLYETHYLINE/BIOMASS COMPOSITE: EFFECTS OF PARTICLE SIZE
Authors: Gbenebor Oluwashina , Osabumwenre Festus , Adeosun Samson
Published: September 2020

This study focuses on the use of Alibizia Lebbeck Benth pod particles (ALBp) as reinforcement on low density polyethylene (LDPE). Composites were processed via casting where 408 and150 µm ALBp where used in reinforcing LDPE. Samples were subjected to Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Differential Scanning Calorimetry (DSC). Thermogravimetry Analysis (TGA) impact strength and tensile characterizations. Composites showed improved thermal stability and crystallinity compared to unreinforced LDPE. Tensile strength (UTS) of composite increased by 331% as it improved from 0.36MPa for unreinforced LDPE to 1.55MPa using ALBp of 150µm. Additional C=C and C-O-C groups observed on the composite’s spectrum could be responsible for the improvement in mechanical properties. Reinforcing LDPE with larger ALBp (408µm) culminated in the formation of gaps and voids in the composite.
CHARACTERISTICS OF HOOK AND INTERMIXING LAYER OF FRICTION STIR SPOT WELDING AA5052/C10100 JOINTS REINFORCED BY ZNO NANO-PARTICLES
Authors: AlShaibani Iman , Aljanabi Mohammed
Published: September 2020

FSSW is a solid state joining method gained its significance as an alternate welding technique in the in electrical, electronic and automobile industries that used FSW welding. FSSW can be used to welding dissimilar joints of material with variation in metallurgical and mechanical characteristics. In this paper, dissimilar welding joints of aluminum alloys (5052) and pure copper (10100) with a thickness of 1.67 mm were welded by FSSW. The variation of rotational speed, dwell time and filler content have been used. The welding joints has been examined by tensile shear test. The scanning electron microscope SEM and X-ray diffraction are used to investigate the hook and intermixing layer characteristics. It was found the best welding condition is (1400 rpm) and (30 sec) which the joint is possess the tensile shear force (3340 N). Adding ZnO filler led to increase the thickness of the copper hook, and expanding the stir zone (weld width bond). Joints with V2-ZnO have highest thickness of intermixing layer (IM), length of weld width bond and best tensile shear force (4300 N).
EVALUATION OF GEOMETRIC AND BEHAVIORAL FEATURES OF ROUNDABOUT BY USING SIDRA SOFTWARE
Authors: Mohammed Humam , Yousif Maysam
Published: September 2020

Computer simulation can be of high importance to analysis geometry regarding the signalized roundabouts and intersections that are related to systems of urban streets. The major goal of the presented research is analyzing geometry as well as the intersection classification that is related to traffic flow, as well as enhancing the capacity related to intersections for road networks, also relieving city’s congestions. Data on number of vehicles passing through Mudaffar roundabout have been recorded through the author of the presented study from seven in the morning to three after noon for 4 days. Sidra software was adopted to analyzed the data. The results have indicated that the level of service (LOS) regarding the present conditions in the discussed roundabout has been F, and with average delay (303.6 sec/veh). There are two proposals will be used to the developing of the roundabout. The best results indicated that the LOS for present condition of Mudaffar roundabout is C with (26.4 sec/veh) of average delay.
DETERMINATION OF INDOOR CONDITIONS AND HEARTBEAT LEVELS FOR HUMAN THERMAL COMFORT IN ILORIN, NIGERIA
Authors: Olayemi O. A. , Adegun I. K. , Oparinde D. O. , Olukanni E. S. , Ibiwoye M. O.
Published: September 2020

The paper presents an experimental determination of indoor conditions for human thermal comfort for four different structural positions in Ilorin, Kwara State, Nigeria. The Fanger's model was used to determine the optimum productivity level of occupants of the location under investigation. Experimental results and heat balance equation were coupled to determine the heat loss due to regulatory sweating in the zone. The results show the relationship between structural positions, skin temperature and ambient temperature of the enclosed space. For thermal comfortability, the expected indoor conditions for people sitting relaxed in their parlours, offices, and students receiving lectures should be 22°C and a relative humidity of 59.6% while for offices where documentations and businesses are done in seated and typing structural positions, a temperature of 21°C with a relative humidity of 59.3% are required for optimum productivity.
OPTIMIZATION OF EDM FOR AA6061/10%AL2O3 AMMC USING TAGUCHI SCHEMES AND ANALYTICAL HIERARCHY PROCESS FOR WEIGHT DETERMINATION
Authors: Olusegun Raji Akinwale , Oke Sunday
Published: September 2020

Previously, some authors proposed the innovative Taguchi–ABC and Taguchi–Pareto optimization tools to concurrently optimize and prioritize processes. In this paper, the models were used to optimize the electrical discharge machining (EDM) process parameters of AA6061/10%Al2O3 AMMC, validated with published data. Besides, the analytical hierarchy process (AHP) was used to determine the weight of factors. The Taguchi–Pareto 80/20 method utilizes the smaller-the-better quality attribute and a complimentary effort of the analysis of variance. The Taguchi-ABC uses the classified A, B and C schemes to prioritize the parameters. The AHP ranks the system as sub-problems of the top-level objective hierarchy followed by lower-level sub-criteria and bottom level variables. The results show the decreasing order of factors (pulse-on-time > peak current > duty factor) for Taguchi analysis and Taguchi-Pareto. The later yielded the optimal parametric setting of A1B2C2, indicating peak current of 6 amps, pulse-on-time of zero and duty factor of 0.6. The Taguchi-ABC reduced to Taguchi AB (i.e. optimal parametric setting as A1 B2) whereby the C (duty factor) yielded lower delta value than B (pulse-on-time). The AHP offered a conflicting result with duty factor having the largest criteria weight and the order of the weights of the factors is duty factor > pulse-on-time > peak current. The consistency ratio was 0.07 > 0.1. The results would aid EDM process engineers to effectively manage the EDM process.
EVALUATION OF LIGHT POLLUTION IN THE STREETS AND THE ROADS OF AL-NAJAF CITY, IRAQ
Authors: Admawi Hayder
Published: September 2020

The use of night-time lighting is an irreplaceable technique in modern urban societies. On the other hand, its excessive use is accompanied by undesirable effects on humans and nature, as well as on all living beings. This has been declared in the last two decades. Nowadays, light pollution is getting increasing attention all over the world, particularly in developed countries, as most of the global researches have proven that there is a direct link between serious health problems and the increase in the levels of light intensity that people are exposed to. However, to minimize the use of exceeding lighting, some countries such as South Korea and many international organizations concerned with light pollution such as CIE (Commission Internationale de l’Eclairage) have developed specifications and determinants to minimize light pollution. Furthermore, these countries have enacted laws and legislations that regulate and limit artificial lighting use. Whereas in other countries, such as Iraq, the issue of light pollution has not given enough attention from researchers or officials and there have been no specifications that limit this widespread phenomenon. In this study, a field survey was performed that included many famous commercial and main streets as well as some external roads that link Al-Najaf city with other cities in Iraq. Moreover, this investigation included measuring the intensity of lighting in many significant squares in Al-Najaf city. This study concluded out there is clear and tangible light pollution and exceeds determinants many times in most streets and roads. In Al-Sadiq Street, for example (the main street in the old city), light pollution was 16.78 times greater than the allowable limit. This is the highest value that exceeds the standard limits for a survey of the selected streets in Al-Najaf city. As for the city squares, they were all higher than the permitted limit, whether during pre-curfew or postcurfew times. In this respect, the light pollution in “Thworat al-Ishreen Square” exceeded by 48.96 times and 233.8 times the official standard of (CIE) recommendations during the period of pre-curfew and post-curfew respectively.  This indicates a lack of environmental awareness in reducing unnecessary lighting as well as the absence of legislation and laws that limit the use of lighting, mainly after midnight, and that is entirely different the way the developed countries have handled the adverse effects of light pollution.
Electrodeposition of Zn-Fe Alloy from Non-Cyanide Alkaline Sulphate Bath Containing Tartarate
Authors: Narasimhamurthy V. , Shivashankarappa L.H.
Published: September 2020

Electrodeposition of Zn-Fe alloy from an alkaline sulphate bath containing tartarate has been carried out. The effect of plating variables on the composition of alloy and on cathodic current efficiency was studied. The cyclic voltammetric studies carried out to know the mutual co-deposition of zinc and iron. Hardness and the surface morphology of the alloy deposits were found to be dependent on the iron content in the alloy. An alloy containing 20% wt. Fe showed smooth, uniform and finer grained deposits. Under the optimum composition and operating conditions, Zn-Fe alloy deposition from alkaline sulphate bath containing tartarate followed anomalous depositing process.
Biomediated Green Synthesis of Copper Nanoparticles using Piper nigrum Leaf Extract
Authors: Sreeja C. , Annieta Philip K. , Shamil K. , Asraj O.P. , Sreeja S.
Published: September 2020

In the present days the development of efficient green synthesis of metal nanoparticles has become a major focus of researchers. It was aimed in order to find a safe, economic and eco-friendly technique for the production of well characterized nanoparticles. The present study reports the green synthesis of copper nanoparticles using plant extract (pepper leaf extract) and a copper salt (copper chloride, CuCl2). Copper nanoparticles are produced by the reduction of CuCl2, while the aqueous leaf extract act as reducing agent. The formation of copper nanoparticles was recognized by the change of colour from blue to black. The synthesized nanoparticles were then characterized through EDAX, XRD, and UV-Vis spectrophotometry. EDAX confirmed the formation of copper nanoparticles. The UV-Vis spectrophotometer analysis confirmed the absorption peak of copper nanoparticles at wavelength of 500-700 nm. XRD analysis revealed three sharp peaks specifically referred to face centered cubic structure of metallic copper. This work was also carried out the optical studies of copper nanoparticles which were exposed to direct sunlight. This study reflected the effect of sunlight intensity on the absorption peak of copper nanoparticles.
Chemical Synthesis, Functionalization and Characterization of Multiwalled Carbon Nanotubes
Authors: Gautam S.S. , Satsangi G.P. , Satsangi V.R.
Published: September 2020

This research work is attempted to synthesize, functionalize and to characterize multi walled carbon nanotubes (MWCNTs). The synthesis of multi walled carbon nanotubes was done by chemical vapor deposition (CVD) method. The characterization of MWCNTs was done by adopting the following techniques such as field emission scanning electron microscope, X-ray diffraction, Fourier-transform infrared spectroscopy. The crystalline quality of MWCNTs was confirmed from the analysis of X-ray diffraction pattern. FE-SEM image obtained for MWCNTs and functionalized MWCNTs and it has been seen that dimeter of most of the MWCNTs lies around 90 nm, where as, functionalized MWCNTs diameter is smaller i.e., around 35 nm only. Fourier-transform infrared spectroscopy study confirmed the presence of –COOH and H- bonded –OH in functionalized MWCNTs.
A Short Communication on Indoor-Based Therapies to Reduce Stress During the COVID-19 Pandemic
Authors: Daljit Singh Karam , Keeren Sundara Rajoo , Farrah Melissa Muharam , Dzarifah Zulperi
Published: September 2020

Preserving mental health during the COVID-19 crisis should be a priority for individuals worldwide. In this regard, mental health professionals should advise the general public on the actions/activities that they can take to prevent mental health issues from becoming the next pandemic. However, the general public should also actively take measures to improve their mental wellbeing. Music therapy, aromatherapy or indoor nature therapy may or may not have the potential to preserve mental wellbeing, but individuals should experiment with them to ascertain the effects on themselves. Moreover, the guidelines provided by WHO should also be adhered to, as a healthy mind starts with a healthy body.
Pemanfaatan Moodle pada Identifikasi Kendala dalam Soal Reading dengan Format Tes TOEIC
Authors: Aji Satriya Bayu , Antoni Condra
Published: September 2020

Most TOEIC test takers who score low are unfamiliar with the format of the test. This study aims to identify the problems that will likely become obstacles in the Reading Section of the TOEIC test. The data come from the results of the English I online final exam in the second term of 2017/2018 as well as the English II online mid-term and final exam in the first term of 2018/2019, all of which were held in Politeknik Negeri Batam. The exams are part of Moodle-based e-learning courses. The data consist of questions which have a low percentage of correct answers. The analysis was done by classifying the questions based on the five abilities measured in the Reading Section (vocabulary, grammar, specific information, inference, and connection). Based on the analysis, it can be observed that the biggest challenge comes from grammar, while the search for specific information poses little to no problem at all. It means the students still consider Reading Section of TOEIC test requires no special attention.