bluuebunny/crossref_metadata_2025_split huggingface dataset:
Toxicity of selected insecticides on late stage instar of bagworm, Metisa plana
Authors: Mat Mohammad Daniel , Md Latip Siti Noor Hajjar , Che Manan Che Ahmad Hafiz , Che Razali Ayman 
Published: August 2020

Metisa plana is a significant oil palm pest in South East Asia and is well recognized for its devastating impact on oil palms in Malaysia. Due to the high intensity of the Metisa plana assault on oil palm plantation in the peninsular, Malaysia. The use of insecticides has become a famous means of controlling Metisa plana infestation when the economic threshold is reached. Three selected insecticides are Cypermethrin, Flubendiamide and Bacillus thuringiensis tested for their toxicity toward Metisa plana. Late stage instar of Metisa plana were collected at Felda Serting Hilir 4, Bahau to be tested on three different pesticide including one control treatment. For each treatment, five replications were exposed to the selected chemical by using leaf dip bioassay method. The mortality of Metisa plana were recorded for eight consecutive days. Result showed that both Cypermethrin and Flubendiamide can achieve 100% mortality rate within four days while it takes eight days for Bacillus thuringiensis and control treatment. Further study should be done in the field to obtain more accurate results when exposed to the natural conditions and environment.
Phytochemicals, Antimicrobials and Antioxidants Studies of the Stem Bark Extract from Calophyllum ferrugineum
Authors: Noh Izzah Afifah , Jong Vivien Yi Mian 
Published: August 2020

Traditionally, Calophyllum genus was used for swollen gums, arthritis, diarrhea, chronic abscess, skin infections, and lesions treatment. C. ferrugineum from Sarawak has least studied about their phytochemical constituents and biological activities. The objectives are to isolate and characterize the chemical components from C. ferrugineum and to determine their antimicrobial and antioxidant activity. The plant stem barks were collected from National Park in Sarawak and underwent extraction process. The extracts underwent isolation and purification processes by using several chromatographic methods. Structural elucidation was achieved by using infrared, MS and NMR spectra. The isolation process from the species has afforded 5 known compounds; isocalanone (1) and 1-hydroxy-7-methoxy-9H-xanthen-9-one (2), lupeol (3), friedelin (4) and diethylene glycol dibenzoate (5). The chloroform and methanol extract showed strong inhibitions against S. aureus, B. subtilis, P. aeruginosa and E. coli with the MIC and MBC values ranging from 225 and 112.5 µg/mL. Isocalanone (1) and the methanol extract of C. ferrugineum showed potent antioxidant activity with the IC50 values of 28 ± 5.23 and 35 ± 3.69 µg/mL compared to ascorbic acid, respectively. The results obtained from this study emphasized the potential of the species as antimicrobial and antioxidant agents.
Characteristics and mechanical properties changes due to incorporation of aloe vera in polyethylene-based film
Authors: Abd Karim Siti Fatma , Jai Junaidah Binti , Ku Hamid Ku Halim , Abdul  Jalil Abdul Wafi 
Published: August 2020

Non-degradable properties of polyethylene (PE) films due to long-chain structure cause increment of solid waste plastic. Many researchers, with different purposes, have studied the incorporation of functional materials to PE. Studying the impact of incorporation of aloe vera (AV) into PE films in terms of its characteristic and mechanical properties is the main objective of this paper. The films were prepared using melt-blending and hot press technique. The characterization assessed for the PE and PE-AV films were spectroscopy, crystalline phase, thermal analysis and performance of mechanical properties of the sample. The functional group detected in spectroscopy studied did not show any changes for PE film or PE with the presence of AV. Lower thermal degradation temperature (Td) obtained for PE-AV3 while others film found no significant changes of Td value and only one peak of thermal degradation occurred for all film. The same goes to the analysis obtained from differential scanning calorimetry (DSC) data. However, the crystalline structure displayed momentous peak changes for PE with AV. The highest tensile strength (TS) obtained by PE-AV3, at once developing highest value of Young’s modulus (YM), modulus of resilience (UE) and modulus of toughness (UT). A certain amount of AV has substantial effect on changing the polymeric structure especially improving the mechanical properties of PE film. Therefore, AV has potential to become an additive for developing a new partially degradable PE film.
New Complexes with Triazole Schiff Bases Derivative Ligand Containing Aspirin: Synthesis, Structure, Conductivity and Magnetic Susceptibility
Authors: Al-Shamkhani Zeki A. Naser , Dakhil Ahlam S. , Kadhim Zaki N. 
Published: August 2020

Complexes of Cu(II) ), Ni (II) and Co (II) of a new triazole Schiff-base of two different ligand ,namely(E)-2-(4-((2-hydroxybenzylidene)amino)4H- 1,2,4-triazol-3-yl)phenyl acetate and (E)-2-(4-((2-hydroxy-4-methoxybenzylidene)amino)-4H-1,2,4-triazol-3-yl)phenyl acetate were prepared and characterized by elemental analysis, 1H, 13C-NMR, FTIR and UV-Visible spectroscopic data. The complex is found to be an ionic in nature by conductivity measurements and have been found to posses 1:2(M:2L) stoichiometry. The magnetic moment values of 1.540–1.7295.B.M. for Cu(II) complexes without doubt recommend octahedral geometry with one unpaired electron for Cu(II) complexes. The magnetic moment values of 3.863–4.039 B.M. for Co(II) complexes that recommend high spin octahedral geometry with three unpaired electron for Co(II) complexes. The magnetic moment value of 2.351B.M. for Ni(II) complex was matches to two unpaired electrons and octahedral geometry. Considerable variations in biological activity with structure and types are observed for these complexes.
Optical and Defect Properties in Nearly Stochiometry ZnO Film Coated on Si (111) by Ultrasonic Spray Pyrolysis Method
Authors: Soegijono Bambang , Notonegoro Hamdan AKbar , Sugihartono Iwan , Budianto Emil , Iskandar Muhamad Riza 
Published: August 2020

ZnO is one of ceramic semiconductor material, which has interesting properties due its wide bandgap energy (3.4 eV), and it may be used in many optoelectronic devices. Optical and Defects properties of ZnO could affect the properties of the devices. ZnO films have been deposited on Si (111) substrate by ultrasonic spray pyrolysis (U.S.P.) method at temperatures 400oC, 450oC, and 500oC. The samples consist of two part, annealed and non-annealed heat treatment. The annealed treatment was conducted at temperature 800oC for 2 hours. The XRD pattern revealed that the ZnO film is a polycrystalline. The T.E.M. characterization showed that non stochiometry of the ZnO film present. From the UV-vis pattern, the transition of electrons is affected by the defect present. The ZnO films show a characteristic luminescence properties. It found three defects, there are oxygen vacancies (Vo), oxygen interstitial (Oi), and an electron transition from the level of the ionized oxygen vacancies to the valence band, that is responsible for green band emission.
A Circular Inclusion and Two Radial Coaxial Cracks with Contacting Faces in a Piecewise Homogeneous Isotropic Plate Under Bending
Authors: Sulym Heorgij , Opanasovych Viktor , Zvizlo Ivan , Seliverstov Roman , Bilash Oksana 
Published: August 2020

Abstract
The bending problem of an infinite, piecewise homogeneous, isotropic plate with circular interfacial zone and two coaxial radial cracks is solved on the assumption of crack closure along a line on the plate surface. Using the theory of functions of a complex variable, complex potentials and a superposition of plane problem of the elasticity theory and plate bending problem, the solution is obtained in the form of a system of singular integral equations, which is numerically solved after reducing to a system of linear algebraic equations by the mechanical quadrature method. Numerical results are presented for the forces and moments intensity factors, contact forces between crack faces and critical load for various geometrical and mechanical task parameters.
Practical Aspects of Design and Testing Unmanned Aerial Vehicles
Authors: Szywalski Patryk , Waindok Andrzej 
Published: August 2020

Abstract
A design of an unmanned aerial vehicle (UAV) construction, intended for autonomous flights in a group, was presented in this article. The design assumptions, practical implementation and results of the experiments were given. Some of the frame parts were made using 3D printing technology. It not only reduces the costs but also allows for better fitting of the covers to the electronics, which additionally protects them against shocks and dirt. The most difficult task was to develop the proper navigation system. Owing to high costs of precision positioning systems, common global positioning system (GPS) receivers were used. Their disadvantage is the floating position error. The original software was also described. It controls the device, allows performing autonomous flight along a pre-determined route, analyses all parameters of the drone and sends them in a real time to the operator. The tests of the system were carried out and presented in the article, as well.
Modelling of Impulse Load Influence on the Stress State of Foam Materials with Positive and Negative Poisson’s Ratio
Authors: Sulym Heorhiy , Mikulich Olena , Shvabyuk Vasyl’ 
Published: August 2020

Abstract
The influence of impulse load applied for different duration on the distribution of normalised dynamic radial stresses in positive and negative Poisson’s ratio medium was investigated in this study. For solving the non-stationary problem in the case of plane deformation for structurally inhomogeneous materials, the model of Cosserat continuum was applied. This model enables accounting for the influence of shear-rotation deformation of micro-particles of the medium. In the framework of Cosserat elasticity, on applying the Fourier transforms for time variable and developing the boundary integral equation method, solving of the non-stationary problem reduces to the system of singular integral equations, where the components that determine the influence of shear-rotation deformations are selected. The numerical calculations were performed for the foam medium with positive and negative Poisson’s ratio for different values of time duration of impulse. Developed approach can be used to predict the mechanical behaviour of foam auxetic materials obtained at different values of a volumetric compression ratio under the action of time variable load based on analysis of the distribution of radial stresses in foam medium.
Design Research of 600 M Scale Concrete Arch Bridge Based on Mathematical Optimization Method
Authors: Yu Hongjiang , Mao Jiuqun , Zhou Qian , Cheng Boxu , Liu Xuesong , Du Chunlin 
Published: August 2020

Abstract
The mathematical algorithm of zero order optimization is a general function approach optimization method. Based on this method, many sets of analytical procedures are developed using ANSYS to study the design of 600m scale concrete arch bridge and the optimal arch axis coefficient, change mode and cross section sizes are obtained and verified. Results show: the mathematical algorithm of zero order optimization can effectively study the design of 600m arch bridge. The rich conclusions about design parameters can be a significant reference for design and further research of 600 m scale concrete arch bridge.
Clinical Features and Therapeutic Management of Postoperative Eso-Gastro-Duodenal Fistulas – A 6-Year Retrospective Study
Authors: Porojan Vlad Andrei , David Oana Ilona , Coman Ionut Simion , Coman Violeta Elena , Florea Costin , Badiu Cristinel Dumitru , Paraschiv Marius , Grigorean Valentin Titus 
Published: August 2020

Abstract
The postoperative digestive fistula is the most feared complication of gastrointestinal surgeries. We performed a retrospective study over a period of 6 years, in which we included 28 patients who developed postoperative esophageal, gastric or duodenal fistulae in the General Surgery Department of “Bagdasar–Arseni” Emergency Hospital. We assessed the risk factors for this complication, its management and its results. Most patients were males and the mean age was 61.1 years. For 15 patients, the surgeries were required for benign lesions while the rest of 13 patients had malignant disease. Regarding the type of the fistula, 14 were duodenal stump fistulas, 13 were anastomotic leakages and one was a dehiscence of a sutured duodenal ulcer. Six cases required emergency relaparotomy for sepsis and peritonitis. Sixteen patients had a favourable outcome while death occurred in 12 cases. The mortality was higher for patients with sepsis and peritonitis as the first clinical manifestations of fistula and with the need for an emergency reoperation.
The Elderly Patient – Clinical-Pathological Particularities of Left Colon Cancer
Authors: Marinca Madi , Beuran Mircea 
Published: August 2020

Abstract
Almost half of the patients with colorectal cancer are over 70 years old. The aim of the study is to analyse the main clinical and paraclinical characteristics of elderly patients with left colon cancer. 171 patients with left colon cancer were included in a retrospective study, analysing the differences between the patients under and those over 70 years from the point of view of the symptomatology, laboratory investigations, treatment of anemia, postoperative complications. Secondary anemia is seen in a quarter of the patients, and the indication of intraoperative transfusion was most frequent in the elderly (p=0.007). The incidence of intestinal occlusion increases with age, so that one third of the patients over 80 years are admitted with intestinal occlusion. The management of the elderly patient with left colon cancer should benefit from a pluridisciplinary approach, in the context of the numerous associated disorders and the particularities of the geriatric patient.
Patient Care Approach Using Nursing Theories - Comparative Analysis of Orem’s Self-Care Deficit Theory and Henderson’s Model
Authors: Gligor Laura , Domnariu Carmen Daniela 
Published: August 2020

Abstract
Nursing theories have been developed to provide guidance in clinical practice, so their knowledge by nurses is mandatory in order to provide advanced nursing care. This paper presents the relationships between the concepts and major assumptions of Henderson’s model and Orem’s theory and then their comparative analysis. Both, Henderson’s model and Orem’s theory of self-care deficit have a major impact, internationally, in education and research, but also in nursing practice, as a result of which their knowledge can open a new perspective on care, especially in countries where they are not well enough known.
Coping Strategies in Thyroid Diseases
Authors: Pápai Annamária , Cozma Maria Melania , Coșa Lucica Emilia , Mihai Adriana 
Published: August 2020

Abstract
In the present study, we aimed at evaluating the relationship between the cognitive coping strategies of people with thyroid diseases and the level of stress experienced by them. During the present study we evaluated the coping strategies with Cognitive Emotion Regulation Questionnaire, and the level of stress experienced by them with Holmes and Rahe stress scale. All patients attended an endocrinology outpatient clinic between may-august 2019. 42 thyroid patients (31 with hypothyroidism and 11 with hyperthyroidism), aged 33-69 were selected for this study. The coping strategies used predominantly by thyroid patients are: rumination, positive reappraisal, catastrophizing. The rumination and the level of stress experienced correlated positively. 295 *, p = .044, statistically significant (p<0.05). 58.13% of patients presented stressful events in the year prior onset of thyroid pathology. This finding is important because restructuring less proactive coping strategies through psychotherapies can be an effective alternative or adjuvant way of treating thyroid diseases.
Subarachnoid Haemorrhage in an Elderly Patient with Comorbidities
Authors: Săceleanu Vicențiu , Babeu Alexandru , Săceleanu Adriana 
Published: August 2020

Abstract
Subdural hemorrhage is usually caused by a traumatic injury. Other risk factors that may lead to subdural hemorrhage include: hypertension, anticoagulants, elderly, alcohol abuse, vascular abnormalities etc. Mortality range is between 50% and 90% depending on age, admission Glasgow Coma Scale (GCS) and anticoagulant treatment. We present a case of 74-year old patient, female, known for diabetes, high blood pressure, obesity, chronic heart failure, receiving anticoagulant treatment, bronchial asthma who develops a posttraumatic massive chronic subdural hematoma accompanied by comorbidities.
Decompensated Aortic Stenosis in a Young Patient with Multiple Comorbidities - A Case Report
Authors: Stoica Alexandra , Harpa Marius , Hussein Hussam Al , Opriş Carmen , Opriş Cosmin , Hussein Hamida Al , Ghiragosian Claudiu , Banceu Cosmin , Suciu Horaţiu 
Published: August 2020

Abstract
Aortic valve replacement is a safe therapy that can reverse cardiac remodeling and increase cardiac contractility, improve symptoms and quality of life. We presented a case of a 35-year-old male patient admitted to the Emergency Institute for Cardiovascular Disease and Transplantation of Târgu Mureș, Romania, due to severe aortic stenosis with severely depressed ejection fraction, left atrial myxome and a history of deep vein thrombosis and pulmonary thromboembolism. He underwent excision of the aortic valve and replacement with a mechanical prosthesis, excision of left atrial myxoma and tricuspid annuloplasty. The postoperative evolution was favourable with a significant recovery of the left ventricular systolic function and regression of cardiac symptomatology. This case was particular due to the rapid progression of the aortic pathology with the reduction of cardiac (systolic) function in a relatively short time as well as the occurrence of the thromboembolic event unrelated to the left atrial myxoma and rather associated with the background of cardiac failure with low cardiac output.
Laparoscopic Myomectomy
Authors: Chicea Radu , Chicea Anca Lucia , Niță Paula 
Published: August 2020

Abstract
Pelvic masses are commonly diagnosed following clinical examination. These may be located in the genital organs or may interest other pelvic and abdominal organs. The pathology of the pelvic masses varies with age. The postmenopausal period is most commonly associated with malignant pathology while reproductive age is associated with benign pathology. The purpose of this paper is to present the experience of the Obstetrics and Gynaecology Clinic of the Sibiu County Clinical Emergency Hospital in laparoscopic myomectomy. We evaluated the patients admitted to the Obstetrics and Gynaecology Clinic of the Emergency County Clinical Hospital in Sibiu who underwent a laparoscopic myomectomy between 1.01.2015 - 06.06.2019. During this time, 14 laparoscopic myomectomies were performed in our clinic. Patients ranged in age from 29 to 57 years.
The Use of Calcium Hydroxide as an Intracanal Medicament in the Treatment of Large Periapical Lesions. A Review
Authors: Dako Timea , Pop Mihai , Fulop Julia , Kantor Janos , Monea Monica 
Published: August 2020

Abstract
Calcium hydroxide is a slow-acting antiseptic substance used in several forms for the last century in various fields of dentistry. Its applications in endodontics are by far the most meaningful including the treatment of root resorptions and perforations, inducing the apexification process, and most importantly as intracanal medicaments representing a crucial step in the nonsurgical management of large periapical lesions. The aim of this article is to conduct a review of the properties, antimicrobial effect, combination with adjuvant substances, biocompatibility, cytotoxicity, and adverse effects of calcium hydroxide-based dressings as an additional manoeuvre in the conservative treatment of chronic apical periodontitis and to draw attention on the importance of this extra step.
Changes in protistan abundance and bacterial activity in response to the addition of eukaryotic inhibitors to natural lake water
Authors: Kalinowska Krystyna , Jakubiec-Krześniak Katarzyna , Chróst Ryszard J. 
Published: August 2020

Abstract
Two short-term (24 h and 48 h) microcosm experiments using natural waters from three eutrophic lakes (Masurian Lake District, Poland) were performed to assess the impact of eukaryotic inhibitors (a combination of cycloheximide and colchicine) on the abundance of nanoflagellates and small ciliates in the <15 µm fraction. The results showed that eukaryotic inhibitors were not completely effective against either group of protists; however, they reduced their numbers considerably. At 24 h of the experiment, 41, 15, and 7% of nanoflagellate and 48, 23, and 3% of ciliate abundances were not lysed, depending on the lake from which water was taken. However, after 48 h of incubation, only below 7% of nanoflagellates and 33, 40, and 17% of ciliates were present in the treatments with inhibitors. Our results suggest that inhibitors may indirectly change bacterial growth and activity, but they do not definitively inhibit these processes. It was concluded that eukaryotic inhibitors are more effective against small nanoflagellates than larger nanoflagellates and ciliates. Concentrations of inhibitors higher than 200 and 100 mg l−1 for cycloheximide and colchicine, respectively, and an incubation time longer than 24 h also seemed to be more appropriate to achieve the complete inhibition of protists.
Effective Pre-Treatments for Enhancement of Biodegradation of Agricultural Lignocellulosic Wastes in Anaerobic Digestion – A Review
Authors: Rahimi-Ajdadi Fatemeh , Esmaili Masoomeh 
Published: August 2020

Abstract
Agricultural crop residues like stems, straws and leaves are valuable resources for biofuel production, especially methane, due to anaerobic digestion. Biogas from agricultural lignocellulosic wastes is capable of attaining sustainable energy yields without environmental pollution. Farmers in many developing countries burn these wastes throughout their fields, imposing environmental hazard due to emission of greenhouse gases. The main problem in this field is the recalcitrance of the agricultural lignocellulose waste that limits its enzymatic degradation and hydrolysis efficiency and consequently decreases biogas production. Therefore, efficient pre-treatments prior to anaerobic digestion are essential. Various pre-treatment methods are used for increasing the anaerobic digestibility of lignocellulose biomass, such as physical (mechanical, thermal, etc.), chemical, biological and combined pre-treatments. This paper reviews different pre-treatments used in anaerobic digestion for the agricultural lignocellulosic wastes and explains the advantages and disadvantages of each. The most frequently used pre-treatments for main agricultural wastes in process of biogas production are also introduced.